Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cua hang » cua dang, cua nhung, cua cong
cong san » cong tac
song van » hoang van, trong van, duong van
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 tinh - hanh tranh cua hang ((cong san) or (song van)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu tinh - hanh tranh cua hang ((cong san) OR (song van)) toan cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu tinh - hanh tranh cua hang ((cong san) or (song van)) toan cao*.