LibAnswers: Library answers

Sometimes it is difficult to even consider topics suitable for a systematic review of evidence synthesis, library databases can help you search for possible research topics.

You can however filter a literature search with a search string similar to (need* N2 ("further research" OR investig*)) OR ((evidence OR conclusion) N2 (unclear OR uncertain*)).  If you combine your search with AND, you may highlight any opportunities for further research.

This however is a very basic example,  you should create your own magic 'search string' depending on the prevailing verbiage of your discipline.

Example: MEDLINE search

A search though Ebsco MEDLINE for "health literacy" AND ( (need* N2 ("further research" OR investig*)) OR ((evidence OR conclusion) N2 (unclear OR uncertain*)) ) 

Retrieved the paper:

Subjective Health Literacy among School-Aged Children: First Evidence from Lithuania.

Which contained the phrase:

"For instance, a longitudinal study could provide further evidence regarding the development of HL"