Perhaps you should try some spelling variations:
rand » brand, grand, hand
grandtd » gbrandtd, ggrandtd, ghandtd
gggrandtd » gggbrandtd, ggggrandtd, ggghandtd
bond » bonds
grawd » grand, graw, grad
grawe » grade, grace, graw
grant » grants
grain » brain, gbrain, gmain, ggain
graint » braint, gbraint, gmaint, ggaint, geraint, gradient
grains » brains, gbrains, gmains, ggains
ggain » gain, again
rain » brain, main, gain
gmains » gains, mains

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 hard) or (had or land)) or ((band or bank) or bond)) or ((((grawd or (grandtd or gggrandtd)) or grawe) or ((grant or grain) or (ggain or rain))) or (graint or (gmains OR grains)))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((rand OR hard) OR (had OR land)) OR ((band OR bank) OR bond)) OR ((((grawd OR (grandtd OR gggrandtd)) OR grawe) OR ((grant OR grain) OR (ggain OR rain))) OR (graint OR (gmains OR grains)))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((rand or hard) or (had or land)) or ((band or bank) or bond)) or ((((grawd or (grandtd or gggrandtd)) or grawe) or ((grant or grain) or (ggain or rain))) or (graint or (gmains OR grains)))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: ((((rand or hard) or (had or land)) or ((band or bank) or bond)) or ((((grawd or (grandtd or gggrandtd)) or grawe) or ((grant or grain) or (ggain or rain))) or (graint or (gmains OR grains)))) counterinsurgency study ;*.