Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
trung vat » trung va, trung van, trong vat
trong dan » trong dang, trong tan, trong ban
trong san » trong cac, cong san, dong san
vat dung » van dung, va dung, viet dung
than cao » toan cao, thai cao, than 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 xanh - thanh trung vat dung ((trong dan) or (trong san)) than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - thanh trung vat dung ((trong dan) OR (trong san)) than cao*.