Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu tinh » trieu tinh, lieu tinh, chau tinh
hieu lang » chieu sang, hieu quang, nhieu tang
dang cong » dung cong
trung ca » trung cap, truong ca, trung cua
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
ca dang » cao dang, cua dang, cac dang

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

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