Perhaps you should try some spelling variations:
rand » brand, grand, hand
grandk » gbrandk, ggrandk, ghandk, grand, grande, grantdk, graindk, granddk
granddk » gbranddk, ggranddk, ghanddk, grantddk, grainddk, grandddk
ranks » banks
band » bond
grantd » grants, grant, grand, granttd, graintd, grandtd
grantted » granite, grafted, grantees, granttted, graintted, grandtted
grank » grant, grand, grantk, graink, grandk
graind » grained, grain, grains
granted » grantted, grainted, grandted
migrants » migrantts, migraints, migrandts
gran » grant, grain, grand

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