Perhaps you should try some spelling variations:
interfirm cooperation » inter cooperation, interactive cooperation, firm cooperation
integer cooperation » inter cooperation, integer computation, water cooperation
https microscopy » herbs microscopy, optics microscopy, lapse microscopy
programme https » programs https, programme helps, programme arts

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((integer cooperation) OR (interfirm cooperation)) programme https microscopy https~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((integer cooperation) OR (interfirm cooperation)) programme https microscopy https".
• Adding a wildcard symbol may retrieve word variants: ((integer cooperation) OR (interfirm cooperation)) programme https microscopy https*.