-Brainstorm different search terms that relate to your topic (try to think of broader concepts that relate to your topic, and more specific concepts that relate to your topic; surround your topic!)
-Don't forget to try multiple searches using different combinations of search terms AND try multiple searches in different places (different databases, catalogs, Internet, etc.)
-Try to get an understanding of the scholarly conversation relating to your topic that has already occurred, then figure out how you can add to that scholarly conversation.
-Keep a record of what search terms you use, and keep track of each source you are considering using. Keeping your research organized will save you time and effort!
Don't forget to utilize the different ways of searching MLA Bibliography!
Jstor is an excellent full text archive of humanities, social science and business journals and includes a large number of history journals.