Perhaps you should try some spelling variations:
based relative » based reflective, based receptive, based selective
case relative » das relative, male relative, same relative
wage studies » sage studies, case studies, care studies
game studies » case studies, scale studies, ripe studies
farmers ict » farmers first, farmers back, farmers iowa

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

• Performing a fuzzy search may retrieve terms with similar spellings: commercial farmers ict ((case relative) OR (based relative)) ((wage studies) or (game studies)).~.
• If you are trying to use Boolean operators, they must be ALL CAPS: commercial farmers ict ((case relative) OR (based relative)) ((wage studies) OR (game studies)).*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "commercial farmers ict ((case relative) OR (based relative)) ((wage studies) or (game studies)).*".