Updated the annotations and added translation for Magento_Search module.

app/code/Magento/Search/Block/Adminhtml/Dashboard/Last.php

@@ -63,6 +63,7 @@ protected function _construct()
 
     /**
      * @return $this
+     * @throws \Magento\Framework\Exception\LocalizedException
      */
     protected function _prepareCollection()
     {
@@ -86,6 +87,7 @@ protected function _prepareCollection()
 
     /**
      * @return $this
+     * @throws \Exception
      */
     protected function _prepareColumns()
     {

app/code/Magento/Search/Block/Adminhtml/Term/Edit/Form.php

@@ -51,6 +51,8 @@ protected function _construct()
      * Prepare form fields
      *
      * @return $this
+     * @throws \Magento\Framework\Exception\LocalizedException
+     * @throws \Magento\Framework\Exception\NoSuchEntityException
      * @SuppressWarnings(PHPMD.ExcessiveMethodLength)
      */
     protected function _prepareForm()

app/code/Magento/Search/Block/Term.php

@@ -71,6 +71,7 @@ public function __construct(
      * Load terms and try to sort it by names
      *
      * @return $this
+     * @throws \Magento\Framework\Exception\NoSuchEntityException
      */
     protected function _loadTerms()
     {
@@ -109,6 +110,7 @@ protected function _loadTerms()
 
     /**
      * @return array
+     * @throws \Magento\Framework\Exception\NoSuchEntityException
      */
     public function getTerms()
     {

app/code/Magento/Search/Controller/Adminhtml/Synonyms/Edit.php

@@ -33,11 +33,10 @@ class Edit extends \Magento\Backend\App\Action
     /**
      * Edit constructor.
      *
-     * @param \Magento\Backend\App\Action\Context $context
-     * @param \Magento\Backend\Model\Session $session
-     * @param \Magento\Framework\Registry $registry
+     * @param \Magento\Backend\App\Action\Context                             $context
+     * @param \Magento\Framework\Registry                                     $registry
      * @param \Magento\Search\Controller\Adminhtml\Synonyms\ResultPageBuilder $pageBuilder
-     * @param \Magento\Search\Api\SynonymGroupRepositoryInterface $synGroupRepository
+     * @param \Magento\Search\Api\SynonymGroupRepositoryInterface             $synGroupRepository
      */
     public function __construct(
         \Magento\Backend\App\Action\Context $context,

app/code/Magento/Search/Controller/Adminhtml/Term/ExportSearchCsv.php

@@ -34,6 +34,7 @@ public function __construct(
      * Export search report grid to CSV format
      *
      * @return \Magento\Framework\App\ResponseInterface
+     * @throws \Exception
      */
     public function execute()
     {

app/code/Magento/Search/Controller/Adminhtml/Term/ExportSearchExcel.php

@@ -34,6 +34,7 @@ public function __construct(
      * Export search report to Excel XML format
      *
      * @return \Magento\Framework\App\ResponseInterface
+     * @throws \Exception
      */
     public function execute()
     {

app/code/Magento/Search/Controller/Term/Popular.php

@@ -34,6 +34,7 @@ public function __construct(Context $context, ScopeConfigInterface $scopeConfig)
      *
      * @param \Magento\Framework\App\RequestInterface $request
      * @return \Magento\Framework\App\ResponseInterface
+     * @throws \Magento\Framework\Exception\NotFoundException
      */
     public function dispatch(RequestInterface $request)
     {

app/code/Magento/Search/i18n/pt_BR.csv

@@ -1 +1 @@
-"Search Engine","Search Engine"
+"Search Engine","Mecanismo de Busca"