Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
trung tuan » trung thanh, trung tam, tran tuan
tuan dung » tuan duong, tran dung, tan dung
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu

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

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