Perhaps you should try some spelling variations:
rank » ranks, frank
grank » granks, gfrank, grant, frank, gran
sand » san, hand
band » bond
grand » grant, brand
gpart » part, apart, ipart, gppart
hepart » heart, depart, heppart
art » part
cheart » chepart, heart, chart
cheat » heat, wheat, cheap

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: (((((rank OR (sand OR stand)) OR (bank OR had)) OR land) OR bonds) OR ((grank OR (band OR (grand OR grank))) OR (gpart OR (((hepart OR art) OR gpart) OR (hard OR (cheart OR cheat)))))) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((((rank or (sand OR stand)) or (bank or had)) or land) or bonds) or ((grank or (band or (grand or grank))) or (gpart or (((hepart or art) or gpart) or (hard or (cheart or cheat)))))) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: (((((rank or (sand OR stand)) or (bank or had)) or land) or bonds) or ((grank or (band or (grand or grank))) or (gpart or (((hepart or art) or gpart) or (hard or (cheart or cheat)))))) counterinsurgency study ;*.