Perhaps you should try some spelling variations:
rank » frank
ranks » franks, banks
grain » brain, rain
irand » brand, iran, rand
grand » grant, brand, grantd, irand, grawd
ghand » ghani, ghard
hand » hard
band » bond
frans » frank, franz, trans
gran » grant, iran, graw

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: (((((((rank OR (((gghanittd OR irantdttd) OR grain) OR (irand OR (grand OR (ghand OR ghana))))) OR had) OR (ranks OR bank)) OR hand) OR land) OR band) OR (frans OR (gran OR main))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((((rank or (((gghanittd or irantdttd) or grain) or (irand or (grand or (ghand OR ghana))))) or had) or (ranks or bank)) or hand) or land) or band) or (frans or (gran or main))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: (((((((rank or (((gghanittd or irantdttd) or grain) or (irand or (grand or (ghand OR ghana))))) or had) or (ranks or bank)) or hand) or land) or band) or (frans or (gran or main))) counterinsurgency study ;*.