Perhaps you should try some spelling variations:
thanh mang » thanh hang, hanh mang, nhanh mang
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
theo chu » theo chieu, cho chu, chao chu
cong tac » cong ty
toan cao » toan tap
toan ban » van ban
mang va » mang vua, hang va, bang va
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: ((ho chieu) or (theo chu)) xanh - thanh mang va dung cong tac ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chu)) xanh - thanh mang va dung cong tac ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chu)) xanh - thanh mang va dung cong tac ((toan cao) or (toan ban))*.