Perhaps you should try some spelling variations:
rand » brand, grand, hand
grandk » gbrandk, ggrandk, ghandk, grand, grande, grantdk, graindk, granddk
rank » frank
ranks » franks, banks
gfrank » gffrank, frank
sand » stand, san, hand
band » bond
grantd » granted, grant, grand, granttd, graintd, grandtd
grants » migrants, grantts, graints, grandts
graints » grains, gradients
gran » grant, grain, grand
graindk » grainedk, graink, grainsk
graind » grained, grain, grains

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 (rank or ranks)) or sand) or ((band or bank) or land)) or ((grantd or (grants or graints)) or ((gfrank or (grandk OR graindk)) or (gran or graind)))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((rand OR (rank OR ranks)) OR sand) OR ((band OR bank) OR land)) OR ((grantd OR (grants OR graints)) OR ((gfrank OR (grandk OR graindk)) OR (gran OR graind)))) counterinsurgency study ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((rand or (rank or ranks)) or sand) or ((band or bank) or land)) or ((grantd or (grants or graints)) or ((gfrank or (grandk OR graindk)) or (gran or graind)))) counterinsurgency study ;*".