Perhaps you should try some spelling variations:
rank » ranks, frank
hand » hard
band » bond
grand » brand
grayd » gray, grad
grants » migrants
irand » brand, iran, rand
grains » brains, gbrains, gmains, ggains
grain » brain, gbrain, gmain, ggain
rain » brain, main, gain
brant » brandt, brand, brunt

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((rank or ((hand or band) or had)) or (bank or land)) or ((((grand or grayd) or (grant OR grants)) or (irand or (grains or (grain or rain)))) or (brant or raw))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((rank OR ((hand OR band) OR had)) OR (bank OR land)) OR ((((grand OR grayd) OR (grant OR grants)) OR (irand OR (grains OR (grain OR rain)))) OR (brant OR raw))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((rank or ((hand or band) or had)) or (bank or land)) or ((((grand or grayd) or (grant OR grants)) or (irand or (grains or (grain or rain)))) or (brant or raw))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: (((rank or ((hand or band) or had)) or (bank or land)) or ((((grand or grayd) or (grant OR grants)) or (irand or (grains or (grain or rain)))) or (brant or raw))) counterinsurgency study ;*.