Perhaps you should try some spelling variations:
thanh tung » thanh cong
hieu lang » chieu sang, hieu quang, nhieu tang
cao trong » cao truong, cay trong, tao trong
doi hieu » doi chieu, doc hieu, doi hien
tung cao » nung cao, truong cao, trung cap
cong tac » cong ty
quan cau » quang cao, toan cau, quan ha

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 - thanh tung cao trong cong tac quan cau~.
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - thanh tung cao trong cong tac quan cau*.