Perhaps you should try some spelling variations:
trung thanh » truong thanh
thanh nhung » thanh hung, hanh nhung, tranh nhung
theo chieu » ho chieu, theo chu, thi chieu
manh trung » manh tung, thanh trung, manh hung
nhung cong » dung cong, thong cong, hang cong
cong tac » cong ty
tac nang » tac vang, tai nang, tap nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) OR (theo tieu)) sach - manh trung thanh nhung cong tac nang cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (theo tieu)) sach - manh trung thanh nhung cong tac nang cao".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (theo tieu)) sach - manh trung thanh nhung cong tac nang cao*.