Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cong tac » cong ty
cong tan » cong san, cong thanh, cong ty
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: theo chieu sang - hanh tranh cua cong ((cong tac) or (cong tan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - hanh tranh cua cong ((cong tac) OR (cong tan)) toan cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - hanh tranh cua cong ((cong tac) or (cong tan)) toan cao*.