Perhaps you should try some spelling variations:
khong cong » thong cong, khong cang, khong con
hanh trinh » hanh chinh
chong cong » cong cong, thong cong, cuong cong
lieu tinh » trieu tinh, diep tinh, bien tinh
manh toan » thanh toan, anh tuan, tinh toan
toan ban » van 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 (canh tranh)) cua ((khong cong) OR (chong cong)) manh toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho lieu tinh - ((hanh trinh) OR (canh tranh)) cua ((khong cong) or (chong cong)) manh toan ban~".
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - ((hanh trinh) OR (canh tranh)) cua ((khong cong) or (chong cong)) manh toan ban*.