Perhaps you should try some spelling variations:
rank » frank
ranks » franks, banks
grank » gfrank, frank, graink, irank, grawk
sand » san, hand
bond » bonds
grand » brand, graind, irand, grawd
gran » grain, iran, graw
grant » graint, irant, grawt, grants
grawt » graw, graft, grawe

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((had OR (rank OR ranks)) OR (sand OR stand)) OR (((band OR bond) OR bank) OR land)) OR (grand OR (grank OR (gran OR (((grant OR grawt) OR grawt) OR grawt))))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((had or (rank or ranks)) or (sand or stand)) or (((band or bond) or bank) or land)) or (grand or (grank or (gran or (((grant OR grawt) or grawt) or grawt))))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: ((((had or (rank or ranks)) or (sand or stand)) or (((band or bond) or bank) or land)) or (grand or (grank or (gran or (((grant OR grawt) or grawt) or grawt))))) counterinsurgency study ;*.