Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
lieu tinh » trieu tinh, diep tinh, bien tinh
cua nong » cua cong, cuu nong, cua dong
cuu tong » cuu cong, cuu tinh, huu tung
cong tan » cong tac, cong san, cong ty
toan tap » toan ban
ho lieu » so lieu, co lieu, ho kieu

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: ho lieu tinh - canh tranh ((cua nong) OR (cuu tong)) ((cong tan) OR (cong thanh)) toan tap~.
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - canh tranh ((cua nong) or (cuu tong)) ((cong tan) or (cong thanh)) toan tap*.