Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
cua hang » cua dang, cua cong, cua ban
van toan » van tuan, van thanh, manh toan
van tan » van tuan, van ban, van tai

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 manh - hanh trinh ((cua hang) or (cua nhung)) luong ((van toan) OR (van tan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu manh - hanh trinh ((cua hang) OR (cua nhung)) luong ((van toan) OR (van tan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu manh - hanh trinh ((cua hang) or (cua nhung)) luong ((van toan) OR (van tan)) ban".
• Adding a wildcard symbol may retrieve word variants: doc hieu manh - hanh trinh ((cua hang) or (cua nhung)) luong ((van toan) OR (van tan)) ban*.