Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, truong thanh
hieu lang » chieu sang, hieu quang, nhieu tang
tran tuan » tran xuan, tran quang, tran thanh
nho hieu » nha hieu, nho sieu, nhu hieu
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: nho hieu lang - hanh ((trung tuan) OR (tran tuan)) trong cong dan than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nho hieu lang - hanh ((trung tuan) OR (tran tuan)) trong cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: nho hieu lang - hanh ((trung tuan) OR (tran tuan)) trong cong dan than cao*.