Perhaps you should try some spelling variations:
sand » stand, san, hand
band » bank, bond
grand » brand
hardm » hard, hardy, haram, harddm, hairdm, hartdm
head » lead
hardo » hard, hardy, pardo, harddo, hairdo, hartdo
hartdo » harto, hardtdo, hairtdo, harttdo
ghardtt » gharddtt, ghairdtt, ghartdtt
har » hard, hair, hart
harm » hardm, hairm, hartm, farm, hard
hardtd » harddtd, hairdtd, hartdtd
bharti » bhardti, bhairti, bhartti
harmidm » hardmidm, hairmidm, hartmidm, farmidm, hardidm
harthddm » hardthddm, hairthddm, hartthddm
grant » grants

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: ((((bonds OR (air OR had)) OR (sand OR (band OR grand))) OR land) OR ((((ghardtt OR hardm) OR head) OR ((((hardo OR hartdo) OR (har OR harm)) OR (hardtd OR bharti)) OR (harmidm OR harthddm))) OR grant)) counterinsurgency study ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((bonds or (air or had)) or (sand or (band or grand))) or land) or ((((ghardtt or hardm) or head) or ((((hardo OR hartdo) or (har or harm)) or (hardtd or bharti)) or (harmidm or harthddm))) or grant)) counterinsurgency study ;~".
• Adding a wildcard symbol may retrieve word variants: ((((bonds or (air or had)) or (sand or (band or grand))) or land) or ((((ghardtt or hardm) or head) or ((((hardo OR hartdo) or (har or harm)) or (hardtd or bharti)) or (harmidm or harthddm))) or grant)) counterinsurgency study ;*.