Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
xuat tuong » xuat thuong, xuat truong, xuat thong
tuong cong » truong cong, trong cong, tong cong
hieu tinh » chieu tinh, lieu tinh, kieu tinh
doc hieu » toc thieu, hoc thieu, hoc hien
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu tinh - ((hanh trinh) or (canh tranh)) xuat tuong cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu tinh - ((hanh trinh) OR (canh tranh)) xuat tuong cong san toan ban.
• Adding a wildcard symbol may retrieve word variants: doc hieu tinh - ((hanh trinh) or (canh tranh)) xuat tuong cong san toan ban*.