Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
cong thanh » dong thanh, cong trinh, cong tan
hoc thieu » toc thieu, hoc hien
trung vat » trung va, trung van, trong vat
vat dung » van dung, va dung, viet dung
cong tac » cong ty
toan tap » toan ban

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