Semantic Search Suggester
The Semantic Search Suggester is provided as an icon next to each text field in Quick Search. The icon for this option is: The suggester takes the current set of input that you have given in the text field and looks up our Internal Semantic index for related terms.
To see suggestions for any keyword that you have given, click on the semantic suggester icon and it will show you a list of related technology key terms (as shown in Image below)

To add a key term from the suggested list as an OR’ed term you can click on it once. To add the key term as an AND’ed term simply click on it twice and to add a key term as a NOT term you can click on it three times.
Clicking on Apply will append the selected keywords to your existing search query.
Note: A seed input search is required for the suggester to look up. Also the suggester only considers the text that you have entered in the adjoining text-box.