Perhaps you should try some spelling variations:
based incentives » market incentives, based initiatives
gaze studies » case studies, care studies, gene studies
game studies » case studies, scale studies
ripe studies » case studies, ripe series
a based » a biased, na based, a base
code a » code _, code 2

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

• Performing a fuzzy search may retrieve terms with similar spellings: commercial code a based incentives ((gaze studies) or (((game studies) or (ripe studies)))).~.
• If you are trying to use Boolean operators, they must be ALL CAPS: commercial code a based incentives ((gaze studies) OR (((game studies) OR (ripe studies))))..
• Adding a wildcard symbol may retrieve word variants: commercial code a based incentives ((gaze studies) or (((game studies) or (ripe studies)))).*.