Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
qua dung » quang dung, su dung, qua song
cong tan » cong tac, cong san, cong thanh
tan doan » tran doan, tap doan, van doan
doan dau » doan dieu, phan dau, doan va

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 (doi chieu)) xanh - ((thanh trung) or (hanh trinh)) qua dung cong tan doan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doi chieu)) xanh - ((thanh trung) OR (hanh trinh)) qua dung cong tan doan dau.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chieu)) xanh - ((thanh trung) or (hanh trinh)) qua dung cong tan doan dau*.