Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
gian lang » gian dan
giang van » hoang van, dang van, gian dan
ho chieu » theo chieu, hoc thieu, doi chieu
cua dong » chua dong, cua cong, cua nong
cua dang » cua cong, cua ban
cong dan » cong san, cong tan, huong dan

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 chieu sach - hanh trinh ((cua dong) OR (cua dang)) cong dan ((gian lang) OR (giang van))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh trinh ((cua dong) OR (cua dang)) cong dan ((gian lang) or (giang van))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trinh ((cua dong) OR (cua dang)) cong dan ((gian lang) or (giang van))*.