Perhaps you should try some spelling variations:
rand » brand, sand, rank
grand » gbrand, gsand, grank, brand, graind, irand, grawd
irand » ibrand, isand, irank, brand, iran, irani
ranks » banks
hand » hard
band » bank, bond
grad » grade, graw, gray
gradient » gradeient, grawient, grayient
gran » grain, iran, graw
grant » graint, irant, grawt, grants

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 grand) or ranks) or hand) or (had or land)) or (band or bonds)) or ((((irand or iranktd) or (grad OR grid)) or gran) or ((gradient or grant) or geraint))) counterinsurgency study ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((((rand OR grand) OR ranks) OR hand) OR (had OR land)) OR (band OR bonds)) OR ((((irand OR iranktd) OR (grad OR grid)) OR gran) OR ((gradient OR grant) OR geraint))) counterinsurgency study ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((rand or grand) or ranks) or hand) or (had or land)) or (band or bonds)) or ((((irand or iranktd) or (grad OR grid)) or gran) or ((gradient or grant) or geraint))) counterinsurgency study ;".
• Adding a wildcard symbol may retrieve word variants: ((((((rand or grand) or ranks) or hand) or (had or land)) or (band or bonds)) or ((((irand or iranktd) or (grad OR grid)) or gran) or ((gradient or grant) or geraint))) counterinsurgency study ;*.