Perhaps you should try some spelling variations:
rand » brand, sand, rank
grand » gbrand, gsand, grank, brand, irand, grawd, grayd
band » bank
bond » bonds
grawd » graw, grad
grant » grants, irant, grawt, grayt
grantdtd » grantsdtd, granted, irantdtd, grawtdtd, graytdtd
grawe » grade, grace, graw
gran » iran, graw, gray
grain » brain, gbrain, gmain, grail
graint » braint, gbraint, gmaint, grailt, geraint, grains, gradient
rain » brain, main, rail
gain » gains, main
bmains » brains, 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 hand) or hard) or (had or land)) or (band or bond)) or (((((grawd or (grand OR grant)) or grantdtd) or grawe) or (gran or (grain or (rain or gain)))) or (graint or bmains))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((rand OR hand) OR hard) OR (had OR land)) OR (band OR bond)) OR (((((grawd OR (grand OR grant)) OR grantdtd) OR grawe) OR (gran OR (grain OR (rain OR gain)))) OR (graint OR bmains))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((rand or hand) or hard) or (had or land)) or (band or bond)) or (((((grawd or (grand OR grant)) or grantdtd) or grawe) or (gran or (grain or (rain or gain)))) or (graint or bmains))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: (((((rand or hand) or hard) or (had or land)) or (band or bond)) or (((((grawd or (grand OR grant)) or grantdtd) or grawe) or (gran or (grain or (rain or gain)))) or (graint or bmains))) counterinsurgency study ;*.