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: ((((rand OR rank) OR (hand OR had)) OR (band OR bank)) OR (((ghani OR chad) OR (gsand OR sand)) OR (gland OR land))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((rand or rank) or (hand or had)) or (band or bank)) or (((ghani or chad) or (gsand OR sand)) or (gland or land))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: ((((rand or rank) or (hand or had)) or (band or bank)) or (((ghani or chad) or (gsand OR sand)) or (gland or land))) counterinsurgency study ;*.