Perhaps you should try some spelling variations:
thanh trung » thanh tung
mot chieu » doi chieu
trung tac » trung tam, trong tac, trung tai
hong bang » dong bang, hong hanh, von bang
ho chieu » theo chieu, hoc thieu, doi chieu
tac dung » sach dung, xay dung, tin dung
hang ban » hang luan, hang va, hang tai
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (ho chieu)) xanh - thanh trung tac dung ((hong bang) OR (hang ban)) khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (ho chieu)) xanh - thanh trung tac dung ((hong bang) OR (hang ban)) khan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (ho chieu)) xanh - thanh trung tac dung ((hong bang) OR (hang ban)) khan cap".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (ho chieu)) xanh - thanh trung tac dung ((hong bang) OR (hang ban)) khan cap*.