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: (((((band OR (sand OR san)) OR (hard OR had)) OR land) OR bond) OR (((grand OR ghand) OR gband) OR (gharmd OR (((hair OR air) OR ghairt) OR (hadi OR (hart OR part)))))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((band or (sand OR san)) or (hard or had)) or land) or bond) or (((grand or ghand) or gband) or (gharmd or (((hair or air) or ghairt) or (hadi or (hart or part)))))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: (((((band or (sand OR san)) or (hard or had)) or land) or bond) or (((grand or ghand) or gband) or (gharmd or (((hair or air) or ghairt) or (hadi or (hart or part)))))) counterinsurgency study ;*.