Perhaps you should try some spelling variations:
hanh trinh » canh tranh
tuan phung » tuan hung, tuan phong, tran phuong
phung cong » nhung cong, phong cong, nhung chong
lieu tinh » trieu tinh, diep tinh, bien tinh
cong tac » cong ty
toan cao » toan ban
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 - ((hanh trinh) OR (hanh chinh)) tuan phung cong tac ((toan cao) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho lieu tinh - ((hanh trinh) or (hanh chinh)) tuan phung cong tac ((toan cao) OR (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - ((hanh trinh) or (hanh chinh)) tuan phung cong tac ((toan cao) OR (toan tap))*.