Perhaps you should try some spelling variations:
rand » brand, hand, sand
grandtd » gbrandtd, ghandtd, gsandtd, granttd, brandtd
grand » gbrand, ghand, gsand, grant, brand
band » bank
bond » bonds
grawd » graw, grad
grantdtd » granted
grawe » grade, grace, graw
grain » brain, gbrain, gmain, ggain
graint » braint, gbraint, gmaint, ggaint, geraint, grant, gradient
grains » brains, gbrains, gmains, ggains
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 bond)) or ((((grawd or (grandtd or grantdtd)) or grawe) or (grand or (grain or rain))) or (graint or (grains OR gmains)))) 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 bond)) OR ((((grawd OR (grandtd OR grantdtd)) OR grawe) OR (grand OR (grain OR rain))) OR (graint OR (grains OR gmains)))) 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 bond)) or ((((grawd or (grandtd or grantdtd)) or grawe) or (grand or (grain or rain))) or (graint or (grains OR gmains)))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: ((((rand or hard) or (had or land)) or (band or bond)) or ((((grawd or (grandtd or grantdtd)) or grawe) or (grand or (grain or rain))) or (graint or (grains OR gmains)))) counterinsurgency study ;*.