Perhaps you should try some spelling variations:
doanh nhung » doanh chung, doanh thuong, doanh nhan
theo chieu » theo tieu, ho chieu, theo chu
chieu tach » chiet tach, chieu sach, chiu trach
hanh trinh » canh tranh, hanh chinh
hanh nhung » anh nhung, canh nhung, khanh phung
cong dan » cong san, cong tan, huong dan
toan cao » toan tap
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: theo chieu tach - hanh trinh ((hanh nhung) OR (doanh nhung)) cong dan ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu tach - hanh trinh ((hanh nhung) OR (doanh nhung)) cong dan ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu tach - hanh trinh ((hanh nhung) OR (doanh nhung)) cong dan ((toan cao) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: theo chieu tach - hanh trinh ((hanh nhung) OR (doanh nhung)) cong dan ((toan cao) or (toan ban))*.