There is one problem with subject searching. It works best if you use the exact subject headings as defined by the database. The database doesn't care what you think the subject is. You need to know what the database uses for the subject heading.
If you are interested in the Saturday night variety of dating, then the correct subject heading is "dating social customs"
We hear you asking, "How in the world would I know that dating is supposed to be searched as 'dating social customs'?