How to translate admin interface in Drupal Commerce Kickstart?
I did a search on my computer, I found product.html which contains the text you were looking for:

  &lt;header id="header"&gt;
&lt;h1&gt;Help on products&lt;/h1&gt;
&lt;p&gt;Each product has both a display and can have many variations (size, color, etc). This page lists all of the products grouped by display.&lt;/p&gt;



  



&lt;p&gt;To see the variations of a product, click on â€œQuick Edit.â€ Using bulk updates (located at the bottom of the page) more than one product can have various actions applied.&lt;/p&gt;

&lt;h2&gt;More Information&lt;/h2&gt;

&lt;ul&gt;
  &lt;li&gt;&lt;a href="http://www.drupalcommerce.org/commerce-kickstart-2/product-management-overview"&gt;Product Management Overview&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;&lt;a href="http://www.drupalcommerce.org/commerce-kickstart-2/choosing-between-page-or-variation"&gt;Choosing between Products and Product Variations&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;&lt;a href="http://www.drupalcommerce.org/commerce-kickstart-2/adding-new-product"&gt;Adding a New Product&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;&lt;a href="http://www.drupalcommerce.org/user-guide/product-attributes-variations"&gt;What are Product attributes and variations?&lt;/a&gt;&lt;/li&gt;
  &lt;li&gt;&lt;a href="http://www.drupalcommerce.org/user-guide/product-displays"&gt;What are Product Node Displays?&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;