Perhaps you should try some spelling variations:
tnang cao » toan cao, quang cao, nang co
dang cong » dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
theo chu » theo chieu, cho chu, chao chu
cong tan » cong tac, cong san, cong thanh
tan ran » tan tran, tan van, tan san
ran cau » van cau, ban cau, can cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (theo chu)) sach - hanh ((tnang cao) or (nang cao)) dang cong tan ran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chu)) sach - hanh ((tnang cao) OR (nang cao)) dang cong tan ran cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chu)) sach - hanh ((tnang cao) or (nang cao)) dang cong tan ran cau*.