Perhaps you should try some spelling variations:
thiet nang » nhiet nang, thien nang, thi nang
hanh trinh » canh tranh, hanh chinh
thanh tung » thanh cong
cua nhung » va nhung
ho thiet » hoc thiet, hoa thiet, so thiet
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cao » toan ban, toan tap

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 thiet nang - ((hanh trinh) OR (thanh tung)) cua nhung ((cong dan) OR (cong san)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho thiet nang - ((hanh trinh) or (thanh tung)) cua nhung ((cong dan) OR (cong san)) toan cao~".
• Adding a wildcard symbol may retrieve word variants: ho thiet nang - ((hanh trinh) or (thanh tung)) cua nhung ((cong dan) OR (cong san)) toan cao*.