Many scholarly databases offer an Advanced search option, with search functionalities that can be very useful when you are searching for literature to include in a literature review.
An advanced search often allows you to:
Some databases offer the advanced search as a command line search: you have to enter the field codes, operators etc. yourself. This may sound like a lot of work, but it also allows you to prepare a search query in Word or Excel and copy/paste the query in the database's search interface. This is especially handy when you want to use the same search terms in multiple databases.
The video tutorial Web of Science: Advanced Search (6:16) gives a broad overview of the advanced search options in one particular database: Web of Science.
In the handout Using the advanced search - an example (PDF) you can see an example of a search query using the Advanced search interface in Scopus, Sociological Abstracts (via ProQuest) and PsycINFO (via Ovid).