One thing I have found useful is to search on the author of a paper you found especially interesting or useful. I have found a lot of related, but slightly different papers that way. That can help you get a slightly wider view of a subject, but it is even more useful when you are exploring a field and are not yet sure of the most helpful keywords.
I have a copy of Johnson-Laird and Miller’s Language and Perception; searching on Johnson-Laird’s name I found a really interesting short paper from the 1970s about modal connectives in natural language, for an example.
One thing I have found useful is to search on the author of a paper you found especially interesting or useful. I have found a lot of related, but slightly different papers that way. That can help you get a slightly wider view of a subject, but it is even more useful when you are exploring a field and are not yet sure of the most helpful keywords.
I have a copy of Johnson-Laird and Miller’s Language and Perception; searching on Johnson-Laird’s name I found a really interesting short paper from the 1970s about modal connectives in natural language, for an example.