Perhaps you should try some spelling variations:
hung thang » cang thang, hung tran
hoc chinh » hoan chinh, hoc sinh, hoc kinh
va duong » van duong, va tuong, va huong
vat dung » van dung, va dung, viet dung
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chinh sach - hung thang ((va duong) or (vat dung)) cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - hung thang ((va duong) OR (vat dung)) cong tan toan cau*.