Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
chiet tach » chieu sach
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
trang va » tran van, hang va
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tran cau » tran chau, toan cau, ran cau

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 xanh) or (chieu sang))) or (chiet tach)) - hanh trang va nhung cong tac tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((((chieu xanh) OR (chieu sang))) OR (chiet tach)) - hanh trang va nhung cong tac tran cau.
• Adding a wildcard symbol may retrieve word variants: theo ((((chieu xanh) or (chieu sang))) or (chiet tach)) - hanh trang va nhung cong tac tran cau*.