Database searching is NOT like Google - you have to combine your keywords to make a search string the database understands. You can do this with Boolean operators:
Use Boolean searching. These link keywords and phrases. It's only three little words to remember.
- And - endangered AND birds - returns only those articles that have BOTH terms.
- Or - endangered OR birds - returns all articles that have either the term endangered or the term bird.
- Not - endangered NOT birds - returns articles that has the term endangered, as long as the articles do not have the term bird.
You can use these in endless combinations to specify the kinds of items you get in your result list.