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
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban
ho lieu » so lieu, co lieu, ho chieu
ho kieu » so kieu, thi kieu, ho chieu

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) OR (ho kieu)) tinh - ((hanh trinh) OR (hanh chinh)) tuan phung cong tac toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho lieu) OR (ho kieu)) tinh - ((hanh trinh) or (hanh chinh)) tuan phung cong tac toan ban~".
• Adding a wildcard symbol may retrieve word variants: ((ho lieu) OR (ho kieu)) tinh - ((hanh trinh) or (hanh chinh)) tuan phung cong tac toan ban*.