Perhaps you should try some spelling variations:
cong cong » cong dong, trong cong, dung cong
manh toan » thanh toan, anh tuan, tinh toan
moi hieu » moi dieu, hoi hieu, doi chieu
mai dien » mach dien, mai viet, hai diem
anh dung » anh dong, anh huong, sach dung
dung cua » dung luan, dung cho
van toan » van tuan, van tan, van thanh

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) or (mai dien)) lang - anh dung cua cong cong ((manh toan) or (van toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((moi hieu) OR (mai dien)) lang - anh dung cua cong cong ((manh toan) OR (van toan)) cau.
• Adding a wildcard symbol may retrieve word variants: ((moi hieu) or (mai dien)) lang - anh dung cua cong cong ((manh toan) or (van toan)) cau*.