Perhaps you should try some spelling variations:
thanh trung » thanh tung
quang chan » quang thanh, quang khanh, quang khang
hieu lang » chieu sang, hieu quang, nhieu tang
trung cua » truong cua, trung tuan, trung cap
tong cong » trong cong, cong cong, dung cong
khang cap » khan cap, khang chan, hang ca
cua tong » cua cong, cua dong, cua nong
cong san » cong tac
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - thanh trung cua tong cong san ((khang cap) or (quang chan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh trung cua tong cong san ((khang cap) OR (quang chan)).
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh trung cua tong cong san ((khang cap) or (quang chan))*.