Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
bang thanh » ban thanh, dang thanh, tang thanh
mot chieu » doi chieu, ho chieu
trung cua » truong cua, trung tuan, trung cap
dung cong » dung trong
bang than » ban than, sang than, bang nhan
cua dung » cua dang, cua dong, qua dung

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 (theo chieu)) xanh - thanh trung cua dung cong ((bang than) OR (bang thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (theo chieu)) xanh - thanh trung cua dung cong ((bang than) OR (bang thanh)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (theo chieu)) xanh - thanh trung cua dung cong ((bang than) OR (bang thanh)) cau".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (theo chieu)) xanh - thanh trung cua dung cong ((bang than) OR (bang thanh)) cau*.