Perhaps you should try some spelling variations:
rand » brand, grand, hand
grandttd » gbrandttd, ggrandttd, ghandttd, graindttd, granddttd, irandttd
grandtk » gbrandtk, ggrandtk, ghandtk, graindtk, granddtk, irandtk
granddk » gbranddk, ggranddk, ghanddk, grainddk, grandddk, iranddk
rank » ranks, frank
franks » frankss, ffranks, ranks, frank, frans
sand » san, hand
band » bond
grainttd » grained
graints » grants, grains, gradients
granted » grantsed, grainted, grandted, iranted
grant » grants, graint, grandt, irant
grantk » grantsk, grants, graintk, grandtk, irantk
gran » grain, grand, iran

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 stand)) or ((band or bank) or land)) or ((((grandttd or grainttd) or granted) or graints) or (((grant or (grantk or ((grandtk OR graindtk) or graindtk))) or granddk) or gran))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((rand OR (rank OR franks)) OR (sand OR stand)) OR ((band OR bank) OR land)) OR ((((grandttd OR grainttd) OR granted) OR graints) OR (((grant OR (grantk OR ((grandtk OR graindtk) OR graindtk))) OR granddk) OR gran))) counterinsurgency study ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((rand or (rank or franks)) or (sand or stand)) or ((band or bank) or land)) or ((((grandttd or grainttd) or granted) or graints) or (((grant or (grantk or ((grandtk OR graindtk) or graindtk))) or granddk) or gran))) counterinsurgency study ;*".