Perhaps you should try some spelling variations:
rand » brand, grand, hand
grandtd » gbrandtd, ggrandtd, ghandtd, grantdtd, granddtd, irandtd
rank » ranks, frank, bank
band » bank, bond
grad » grade, grand, grid
grawe » grade, grace, growe, rawe, grewe
grave » gravel, grade, grace
gran » grant, grand, iran
graw » grow, raw, grew
draw » draws, raw
braint » brain, brains, brant, bsaint, brainy
raint » rain, saint, rainy
grain » brain, rain

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 rank) or hard) or (had or land)) or (band or bonds)) or ((((grad or grandtd) or (grawe or grave)) or (gran or (graw OR draw))) or ((braint or raint) or grain))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((rand OR rank) OR hard) OR (had OR land)) OR (band OR bonds)) OR ((((grad OR grandtd) OR (grawe OR grave)) OR (gran OR (graw OR draw))) OR ((braint OR raint) OR grain))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((rand or rank) or hard) or (had or land)) or (band or bonds)) or ((((grad or grandtd) or (grawe or grave)) or (gran or (graw OR draw))) or ((braint or raint) or grain))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: (((((rand or rank) or hard) or (had or land)) or (band or bonds)) or ((((grad or grandtd) or (grawe or grave)) or (gran or (graw OR draw))) or ((braint or raint) or grain))) counterinsurgency study ;*.