Perhaps you should try some spelling variations:
chieu tich » chieu tinh, chu tich, chiet tach
chien dich » phien dich, mien dich, trien dich
hanh trinh » canh tranh, hanh chinh
trinh hanh » trinh thanh, trinh han, trinh anh
hanh nhung » anh nhung, canh nhung, doanh nhung
nhung cong » dung cong, thong cong, hang cong
cong san » cong tac
toan cao » toan tap
toan ban » van ban

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: theo ((chieu tich) OR (chien dich)) - hanh trinh hanh nhung cong san ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu tich) OR (chien dich)) - hanh trinh hanh nhung cong san ((toan cao) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu tich) OR (chien dich)) - hanh trinh hanh nhung cong san ((toan cao) or (toan ban))*.