Perhaps you should try some spelling variations:
hoc chinh » hoan chinh, hoc sinh, hoc kinh
dang cong » dung cong
tang cua » hang cua, tang luan, thong cua
mang cua » manh cua, dung cua, ban cua
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 - hanh ((tang cua) or (mang cua)) dang cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - hanh ((tang cua) OR (mang cua)) dang cong tan toan cau*.