Perhaps you should try some spelling variations:
thanh trung » thanh tung
thuat hung » thuat dung, thuat ung, thuat xung
hieu lang » chieu sang, hieu quang, nhieu tang
cua nhung » va nhung
doi hieu » doi chieu, doc hieu, doi hien
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan lap » phan dau

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 trung ((thuat hung) or (cua nhung)) cong tan phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - thanh trung ((thuat hung) OR (cua nhung)) cong tan phan lap.
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - thanh trung ((thuat hung) or (cua nhung)) cong tan phan lap*.