Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu tinh » trieu tinh, lieu tinh, chau tinh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu tinh) or (diep tinh)) - canh tranh cua nhung cong tan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu tinh) OR (diep tinh)) - canh tranh cua nhung cong tan phan dau.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu tinh) or (diep tinh)) - canh tranh cua nhung cong tan phan dau*.