Perhaps you should try some spelling variations:
information operations » information applications, information integration, information propagation
protocol descriptions » protocol description, product descriptions, project descriptions
descriptions studies » descriptive studies, descriptions standards, descriptions hundreds
information options » information optics, information solutions, information adoption
studies citrus » studies civics, studies corpus, studies courts

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((information options) OR (information operations)) protocol descriptions studies citrus~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((information options) OR (information operations)) protocol descriptions studies citrus".
• Adding a wildcard symbol may retrieve word variants: ((information options) OR (information operations)) protocol descriptions studies citrus*.