Perhaps you should try some spelling variations:
based preventive » based prevention, based perspective, basic prevention
based receptive » based reflective, based relative, based selective
a preventive » _ preventive, 4 preventive, _ preventative
care studies » case studies, career studies, scale studies
code act » code a, code c, code ctu

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 act ((based receptive) or (((based preventive) OR (a preventive)))) care studies.~.
• If you are trying to use Boolean operators, they must be ALL CAPS: commercial code act ((based receptive) OR (((based preventive) OR (a preventive)))) care studies.*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "commercial code act ((based receptive) or (((based preventive) OR (a preventive)))) care studies.*".