Talvez debería tentar con algunhas variantes ortográficas:
instruction comprehensive » introduction comprehensive, introduction comprehension, constructive comprehension
comprehensive programming » comprehensive program, comprehensive programs, comprehension programmed
tension concepts » extension concepts, tensor concepts, revision concepts
order concepts » modern concepts, water concepts, power concepts

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

• Performing a fuzzy search may retrieve terms with similar spellings: instruction comprehensive programming ((tension concepts) or (order concepts)) cited~.
• If you are trying to use Boolean operators, they must be ALL CAPS: instruction comprehensive programming ((tension concepts) OR (order concepts)) cited.
• Adding a wildcard symbol may retrieve word variants: instruction comprehensive programming ((tension concepts) or (order concepts)) cited*.