Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
toc hieu » doc hieu, hoc thieu, thuc hieu
cach ban » cach bao, cach ben, cach van
cong san » cong tac
san phan » san pham, van phan, sat phan
phan lap » phan dau
cac ban » cac dan, cac van, can ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc hieu) OR (toc thieu)) manh - ((cach ban) OR (cac ban)) cua nhung cong san phan lap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc hieu) OR (toc thieu)) manh - ((cach ban) or (cac ban)) cua nhung cong san phan lap~".
• Adding a wildcard symbol may retrieve word variants: ((toc hieu) OR (toc thieu)) manh - ((cach ban) or (cac ban)) cua nhung cong san phan lap*.