Perhaps you should try some spelling variations:
thanh trung » thanh tung
dong thanh » truong thanh
doi chieu » doc hieu, doi chi, mot chieu
trung qua » trung quan, trong qua, trung cua
ho chieu » theo chieu, hoc thieu, mot chieu
qua dung » quang dung, su dung, qua song
cong san » cong tac
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: ((ho chieu) or (doi chieu)) tinh - thanh trung qua dung ((dong thanh) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) tinh - thanh trung qua dung ((dong thanh) OR (cong san)) toan cao.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) tinh - thanh trung qua dung ((dong thanh) or (cong san)) toan cao*.