Perhaps you should try some spelling variations:
rand » brand, grand, sand
grandtd » gbrandtd, ggrandtd, gsandtd, grantdtd, granddtd, irandtd
band » bank
bond » bonds
grawd » grand, grad, grawe, growd, rawd, drawd
graw » grow, raw, draw
gran » grant, grand, iran
grain » brain, gbrain, gmain, grail
graint » braint, gbraint, gmaint, grailt, geraint, grant, gradient
grains » brains, gbrains, gmains, grails
rain » brain, main, rail
brains » bbrains, bmains, brails, brain, trains, drains
gain » gains, main

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 grandtd) or graw) or (gran or (grain or (rain or gain)))) or ((graint OR grains) or brains))) 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 grandtd) OR graw) OR (gran OR (grain OR (rain OR gain)))) OR ((graint OR grains) OR brains))) 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 grandtd) or graw) or (gran or (grain or (rain or gain)))) or ((graint OR grains) or brains))) 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 grandtd) or graw) or (gran or (grain or (rain or gain)))) or ((graint OR grains) or brains))) counterinsurgency study ;*.