Perhaps you should try some spelling variations:
observational cinema » observational clinical, observational context, observational economy
observational basis » observational facts, observational data, observational logic
observational clues » observational aspects, observational results, observational techniques
observation content » observation concept, observation consistent, observational context
observational case » observation case, observational frame, observational noise

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((((observational cinema) OR (((observational case) OR (observational basis))))) OR (observational clues))) OR (observation content)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((observational cinema) or (((observational case) OR (observational basis))))) or (observational clues))) or (observation content))".
• Adding a wildcard symbol may retrieve word variants: ((((((observational cinema) or (((observational case) OR (observational basis))))) or (observational clues))) or (observation content))*.