Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong manh » cong danh, duong manh, cong thanh
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan tap » toan ban

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

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