Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu quang » thieu quang, hieu quan, hieu qua
nhung cong » dung cong, thong cong, hang cong
hieu sang » chieu sang, hieu lang, nhieu tang
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan tap » phan lap, han tap, pha tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu sang) or (hieu quang)) - thanh trung cua nhung cong dan phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu sang) OR (hieu quang)) - thanh trung cua nhung cong dan phan tap.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu sang) or (hieu quang)) - thanh trung cua nhung cong dan phan tap*.