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
dung cong » dung trong
trung va » truong va, trang va, trung ha
cong san » cong tac
toan cao » toan ban
toan tap » toan ban
va dung » van dung, va duong, vat dung

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 va dung cong san ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - thanh trung va dung cong san ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - thanh trung va dung cong san ((toan cao) or (toan tap))*.