Perhaps you should try some spelling variations:
rand » brand, hand
grand » gbrand, ghand, brand, graind, irand, grawd
grandk » gbrandk, ghandk, brandk, grande, graindk, irandk, grawdk
ggrandk » ggbrandk, gghandk, gbrandk, ggrande, ggraindk, girandk, ggrawdk
rank » ranks, frank
gfrank » gfranks, gffrank, frank
sand » stand, san, hand
band » bond
grant » grants, graint, irant, grawt
graints » grants, grains
gradients » gradient
gran » grain, iran, graw
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 banks)) or sand) or ((band or bank) or land)) or (((grand or grant) or ((graints OR gradients) or (graints OR gradients))) or ((gfrank or (grandk or ggrandk)) or (gran or (graind or grained))))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((rand OR (rank OR banks)) OR sand) OR ((band OR bank) OR land)) OR (((grand OR grant) OR ((graints OR gradients) OR (graints OR gradients))) OR ((gfrank OR (grandk OR ggrandk)) OR (gran OR (graind OR grained))))) counterinsurgency study ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((rand or (rank or banks)) or sand) or ((band or bank) or land)) or (((grand or grant) or ((graints OR gradients) or (graints OR gradients))) or ((gfrank or (grandk or ggrandk)) or (gran or (graind or grained))))) counterinsurgency study ;*".