Perhaps you should try some spelling variations:
thanh trung » thanh tung
tien thanh » tien thinh, tran thanh, den thanh
khung cong » nhung cong, khung long, phung cong
hien xanh » hien hanh, hien nhanh, chieu xanh
trung dai » truong dai, truong dao, trung tam
dai khung » dai khong, dam khung, dai khoang
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) or (tien thanh)) - thanh trung dai khung cong tac than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (tien thanh)) - thanh trung dai khung cong tac than cap.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (tien thanh)) - thanh trung dai khung cong tac than cap*.