Perhaps you should try some spelling variations:
rand » brand, grand, sand
hand » hard
band » bank, bond
rain » gain, rail
brains » bgains, brails, grains, trains, rains
drains » dgains, drails, drain, grains, trains
brain » bgain, brail
grawe » grade, grace, graw
granted » grantsed
grant » grants

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((rand or hand) or (had or land)) or (band or bonds)) or (((((san or (gains or rain)) or granted) or grawe) or ((grant or san) or raw)) or (((brains OR drains) or brain) or main))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((rand OR hand) OR (had OR land)) OR (band OR bonds)) OR (((((san OR (gains OR rain)) OR granted) OR grawe) OR ((grant OR san) OR raw)) OR (((brains OR drains) OR brain) OR main))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((rand or hand) or (had or land)) or (band or bonds)) or (((((san or (gains or rain)) or granted) or grawe) or ((grant or san) or raw)) or (((brains OR drains) or brain) or main))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: ((((rand or hand) or (had or land)) or (band or bonds)) or (((((san or (gains or rain)) or granted) or grawe) or ((grant or san) or raw)) or (((brains OR drains) or brain) or main))) counterinsurgency study ;*.