Perhaps you should try some spelling variations:
rand » brand, band, hand
grandk » gbrandk, gbandk, ghandk, grande, brandk, graindk, irandk, grawdk
grand » gbrand, gband, ghand, brand, graind, irand, grawd
rank » ranks, frank
franks » frankss, ffranks, ranks, frank, frans
gfrank » gfranks, gffrank, frank
sand » stand, band, san
bond » bonds
grantd » granted, graintd, irantd, grawtd
grants » migrants, graints, irants, grawts
graints » grains, gradients
grant » graint, irant, grawt
gran » grain, iran, graw
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 franks)) or sand) or ((bond or bank) or land)) or ((((grantd or grants) or grant) or (graints or graints)) or ((gfrank or (grandk OR grand)) or (gran or graind)))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((rand OR (rank OR franks)) OR sand) OR ((bond OR bank) OR land)) OR ((((grantd OR grants) OR grant) OR (graints OR graints)) OR ((gfrank OR (grandk OR grand)) OR (gran OR graind)))) counterinsurgency study ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((rand or (rank or franks)) or sand) or ((bond or bank) or land)) or ((((grantd or grants) or grant) or (graints or graints)) or ((gfrank or (grandk OR grand)) or (gran or graind)))) counterinsurgency study ;*".