Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
van thanh » ban thanh, van tuan
thanh cau » thanh chau, thanh mau, nhanh cau
cong van » cong vang, cong san, song van
ap dung » van dung

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