Perhaps you should try some spelling variations:
thanh trung » thanh tung
thi chieu » thi chien, thi hieu, theo chieu
trung cua » truong cua, trung tuan, trung cap
van thanh » ban thanh, van tuan
ho chieu » theo chieu, hoc thieu, doi chieu
cua dung » cua dang, cua dong, qua dung
van toan » van tuan, van tan, manh toan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thi chieu) or (ho chieu)) tinh - thanh trung cua dung trong ((van toan) or (van thanh)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi chieu) OR (ho chieu)) tinh - thanh trung cua dung trong ((van toan) OR (van thanh)) cao.
• Adding a wildcard symbol may retrieve word variants: ((thi chieu) or (ho chieu)) tinh - thanh trung cua dung trong ((van toan) or (van thanh)) cao*.