Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh chua » tranh cua, trinh chuan, tranh chap
chua dung » chua dong, thuat dung, chua nhung
ho thiet » hoc thiet, hoa thiet, hoc thieu
so thiet » soc thiet, hoc thiet, hoa thiet
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
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: ((ho thiet) or (so thiet)) tach - hanh tranh chua dung ((cong tan) OR (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho thiet) OR (so thiet)) tach - hanh tranh chua dung ((cong tan) OR (cong san)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho thiet) or (so thiet)) tach - hanh tranh chua dung ((cong tan) OR (cong san)) toan ban".
• Adding a wildcard symbol may retrieve word variants: ((ho thiet) or (so thiet)) tach - hanh tranh chua dung ((cong tan) OR (cong san)) toan ban*.