Perhaps you should try some spelling variations:
based incentives » market incentives, based initiatives
based investing » based investment, based testing, asset investing
gene studies » gender studies, genetic studies, general studies
game studies » case studies, scale studies, ripe studies
code aet » code a, code de, code des

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 aet ((based investing) or (based incentives)) ((gene studies) or (game studies)).~.
• If you are trying to use Boolean operators, they must be ALL CAPS: commercial code aet ((based investing) OR (based incentives)) ((gene studies) OR (game studies))..
• Adding a wildcard symbol may retrieve word variants: commercial code aet ((based investing) or (based incentives)) ((gene studies) or (game studies)).*.