Perhaps you should try some spelling variations:
rand » brand, grand, hand
sand » san, hand
rank » frank
ranks » franks, banks
band » bond
irant » grant, iran, irani
grants » grantts, graints, grandts
migrants » migrantts, migraints, migrandts
gran » grant, grain, grand
gbond » bond, gbon

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: (((((rand OR (sand OR stand)) OR (rank OR ranks)) OR (had OR band)) OR land) OR (((irant OR (grants OR migrants)) OR gran) OR (gbond OR (gbank OR bank)))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((rand or (sand or stand)) or (rank or ranks)) or (had or band)) or land) or (((irant or (grants or migrants)) or gran) or (gbond or (gbank OR bank)))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: (((((rand or (sand or stand)) or (rank or ranks)) or (had or band)) or land) or (((irant or (grants or migrants)) or gran) or (gbond or (gbank OR bank)))) counterinsurgency study ;*.