Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
thanh tung » thanh cong
tong cong » trong cong, cong cong, dung cong
cong san » cong tac
gian cao » gian cac, gian co, giai cao
gian dan » gian lang
tung va » trung va, tuong va, dung va
va tong » va thong, va tuong, va trong

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) or (chieu sang)) - thanh tung va tong cong san ((gian cao) or (gian dan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sang)) - thanh tung va tong cong san ((gian cao) OR (gian dan)).
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chieu sang)) - thanh tung va tong cong san ((gian cao) or (gian dan))*.