Perhaps you should try some spelling variations:
rand » brand, hand
grandk » gbrandk, ghandk, grande, grantdk, graindk, irandk, grantk, brandk
grand » gbrand, ghand, grantd, graind, irand, grant, brand
rank » frank
ranks » franks, banks
gfrank » gffrank, frank
sand » stand, san, hand
band » bond
grants » migrants, grantts, graints, irants
graints » grains, gradients
gran » grant, grain, iran
graind » grain, grains
grained » gained, trained, strained

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 ((graintd or (grants or graints)) or ((gfrank or grandk) or (gran or ((graind OR grand) or grained))))) 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 ((graintd OR (grants OR graints)) OR ((gfrank OR grandk) OR (gran OR ((graind OR grand) OR grained))))) 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 ((graintd or (grants or graints)) or ((gfrank or grandk) or (gran or ((graind OR grand) or grained))))) counterinsurgency study ;*".