Setting up your initial keywords is part of the flow when verifying your account. After selecting keywords (and including any negative words to help narrow the results), using a simple Thumbs Up or Thumbs Down, you can teach the tool to improve the relevancy of your search results and notifications.
Based on your keywords, correlating bid titles are displayed with the option below to select Thumbs Up on approved opportunities and Thumbs Down on non-applicable bids:
It will go through 5 results before providing the option to improve relevancy again, or to enter the site and continue setting up your business profile with commodity codes or look at the available bids in the system.
Similar functionality is found within the search pages. Using the Thumbs Up/Down feature, continue to teach the tool which bids are the most relevant to you and improve the notifications sent directly to your inbox: