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
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap
ho lieu » so lieu, co lieu, ho kieu

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

• 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~".
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - ((hanh trinh) OR (hanh chinh)) tuan phung cong tac toan cao*.