Perhaps you should try some spelling variations:
duong cong » dung cong, luong cong, duong trong
hieu lang » chieu sang, hieu quang, nhieu tang
doanh qua » doanh quan, doanh cua, danh qua
doan quan » doan quang, dan quan, toan quan
ban thanh » ban hanh, ban hang
thanh tap » thanh lap, thanh tai, thanh tay
moi hieu » moi dieu, hoi hieu, mot chieu
cong ban » cong bang, cong san, cong tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: moi hieu lang - hanh ((doanh qua) or (doan quan)) duong cong ban thanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: moi hieu lang - hanh ((doanh qua) OR (doan quan)) duong cong ban thanh tap.
• Adding a wildcard symbol may retrieve word variants: moi hieu lang - hanh ((doanh qua) or (doan quan)) duong cong ban thanh tap*.