Perhaps you should try some spelling variations:
knowledge studies » knowledge sources, knowledge states, knowledge services
route studies » rate studies, acute studies, oocyte studies
flute studies » flume studies, fluid studies, flux studies

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((knowledge studies) OR (((route studies) OR (flute studies)))) in crime AND society.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((knowledge studies) or (((route studies) OR (flute studies)))) in crime and society".
• Adding a wildcard symbol may retrieve word variants: ((knowledge studies) or (((route studies) OR (flute studies)))) in crime and society*.