Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
thanh chau » thanh cha, thanh cham, thanh chu
doi chieu » doc hieu, doi chi, ho chieu
trung cua » truong cua, trung tuan, trung cap
thanh lap » thanh san, thanh hai, thanh van
ban cong » bang cong, van cong, phan cong
cong tan » cong tac, cong san, cong thanh
phan lap » phan dau

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: doi chieu sang - thanh trung cua ban cong tan ((thanh chau) OR (((thanh lap) OR (phan lap))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - thanh trung cua ban cong tan ((thanh chau) or (((thanh lap) OR (phan lap))))~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh trung cua ban cong tan ((thanh chau) or (((thanh lap) OR (phan lap))))*.