Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
dung cong » dung trong
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 ((chieu xanh) or (dieu hanh)) - hanh ((trung cua) or (trung cap)) dung cong tac than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (dieu hanh)) - hanh ((trung cua) OR (trung cap)) dung cong tac than cap.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (dieu hanh)) - hanh ((trung cua) or (trung cap)) dung cong tac than cap*.