Perhaps you should try some spelling variations:
nhanh mang » hanh mang, nhanh quang, nhanh thang
nhanh lang » nhanh quang, nhanh thang, nhan dang
nhung cong » dung cong, thong cong, hang cong
nho hieu » nha hieu, nho sieu, nhu hieu
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban
ho hieu » ho chieu, hoi hieu, co hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho hieu) OR (nho hieu)) lang - ((nhanh mang) or (nhanh lang)) va nhung cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho hieu) OR (nho hieu)) lang - ((nhanh mang) OR (nhanh lang)) va nhung cong tan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho hieu) OR (nho hieu)) lang - ((nhanh mang) or (nhanh lang)) va nhung cong tan toan ban".
• Adding a wildcard symbol may retrieve word variants: ((ho hieu) OR (nho hieu)) lang - ((nhanh mang) or (nhanh lang)) va nhung cong tan toan ban*.