Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thiet anh » thien anh, thuyet anh, thien danh
trinh he » trinh han, trinh hoa, trinh thi
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cao » toan tap
toan ban » van ban
he dung » he dong, te dung, nghe dung
luan » quan, lan

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: luan thiet anh - hanh trinh he dung ((cong dan) OR (cong tan)) ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "luan thiet anh - hanh trinh he dung ((cong dan) OR (cong tan)) ((toan cao) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: luan thiet anh - hanh trinh he dung ((cong dan) OR (cong tan)) ((toan cao) or (toan ban))*.