Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
tran tuan » tran xuan, tran quang, tran thanh
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu lang) or (chieu sach)) - thanh trung cua nhung cong tan tran tuan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (chieu sach)) - thanh trung cua nhung cong tan tran tuan.
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) or (chieu sach)) - thanh trung cua nhung cong tan tran tuan*.