Perhaps you should try some spelling variations:
khoang trong » hoang trong, duong trong, cong trong
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
cua khoang » cua khong, cua hang, cua khoa
trong van » trong cac
van than » van thanh, van thang, van tuan
than cao » toan cao, thai cao, than cap

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 xanh - ((thanh trung) or (canh tranh)) cua khoang trong van than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - ((thanh trung) OR (canh tranh)) cua khoang trong van than cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - ((thanh trung) or (canh tranh)) cua khoang trong van than cao*.