Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
sang luan » hang luan, san luan, bang luan
tang luan » dung luan
cong tan » cong tac, cong san, cong thanh
tan doan » tran doan, tap doan, van doan
doan cao » doanh cao, toan cao, doan cap

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)) tinh - tinh ((sang luan) or (tang luan)) nhung cong tan doan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doi chieu)) tinh - tinh ((sang luan) OR (tang luan)) nhung cong tan doan cao.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chieu)) tinh - tinh ((sang luan) or (tang luan)) nhung cong tan doan cao*.