Perhaps you should try some spelling variations:
theo thuat » thien thuat, thu thuat, te thuat
thuat sach » thuat lanh, thuat san
hanh trang » thanh trung, canh tranh, hanh trinh
trang va » tran van, hang va
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
tran cao » toan cao, tran chau, trang cho

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo thuat sach - hanh trang va nhung ((cong tan) or (cong san)) tran cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo thuat sach - hanh trang va nhung ((cong tan) OR (cong san)) tran cao.
• Adding a wildcard symbol may retrieve word variants: theo thuat sach - hanh trang va nhung ((cong tan) or (cong san)) tran cao*.