Perhaps you should try some spelling variations:
comprehension programmes » comprehension programmed, comprehensive programme, comprehensive programs
comprehensive program » comprehensive programs, comprehensive course, comprehensive grammar
revision concepts » vision concepts, visions concepts, supervision concepts
concepts cited » concepts cases, concepts case, concepts care

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

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