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

• Performing a fuzzy search may retrieve terms with similar spellings: (("cooperation process") OR ("observation process"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"cooperation process\") OR (\"observation process\"))".
• Removing quotes may allow a broader search: (( cooperation process ) OR ( observation process )).
• Adding a wildcard symbol may retrieve word variants: (("cooperation process") OR ("observation process"))*.