Perhaps you should try some spelling variations:
rand » brand, grand, hand
sand » san, hand
ihand » hand
ghand » hand, ghana, grand
grays » grass, rays, gays, graws
gray » ray, graw
grayt » rayt, grawt, grant, graft
gmain » main, gain, grain
brain » bmain, bgain, brail
rain » main, gain, rail
rank » ranks, bank
frank » franks, fbank
band » bank, bond
gran » grant, grain, grand

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((((((rand OR sand) OR (((ihand OR (ghand OR (grays OR gray))) OR ((gmain OR brain) OR rain)) OR ihand)) OR had) OR rank) OR stand) OR land) OR band) OR (frank OR (gran OR grayt))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((rand or sand) or (((ihand or (ghand or (grays OR gray))) or ((gmain or brain) or rain)) or ihand)) or had) or rank) or stand) or land) or band) or (frank or (gran or grayt))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: ((((((((rand or sand) or (((ihand or (ghand or (grays OR gray))) or ((gmain or brain) or rain)) or ihand)) or had) or rank) or stand) or land) or band) or (frank or (gran or grayt))) counterinsurgency study ;*.