Perhaps you should try some spelling variations:
thien nhieu » thien nhien, thien hieu, thien chien
nhieu tang » chieu sang, hieu lang, nhiet nang
tranh cua » doanh cua, manh cua
dong cong » duong cong, dung cong, dang cong
manh toan » thanh toan, anh tuan, tinh toan
cua dong » chua dong, cua cong, cua dang
dan than » dan chan, ban than, van than

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: thien nhieu tang - canh tranh cua dong cong ((dan than) OR (manh toan)) tap~.
• Adding a wildcard symbol may retrieve word variants: thien nhieu tang - canh tranh cua dong cong ((dan than) or (manh toan)) tap*.