Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
tong cong » trong cong, cong cong, dung cong
tac chuan » tac quan, tac cua, tac can
chuan cau » chuan chau, chua cau, chuan chat
tung tam » trung tam, vung tam, dung tam
tam tong » tai tong, tam nong, tam song
cong tac » cong ty

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) or (chieu sach)) - thanh tung tam tong cong tac chuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sach)) - thanh tung tam tong cong tac chuan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sach)) - thanh tung tam tong cong tac chuan cau*.