Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
chiet tach » chieu sach
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
va dung » van dung, va duong, vat dung
tuan cu » tuan tu, quan cua, tuan thu

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 sang) or (chiet tach)) - thanh trung ((va dung) or (xay dung)) cong van tuan cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (chiet tach)) - thanh trung ((va dung) OR (xay dung)) cong van tuan cu.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (chiet tach)) - thanh trung ((va dung) or (xay dung)) cong van tuan cu*.