Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » canh tranh, hanh trinh, minh trang
doi chieu » doc hieu, doi chi, ho chieu
cua nhung » va nhung
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
gian nan » gian dan, gian lan, gian van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - ((hanh trang) OR (thanh trung)) cua nhung ((cong dan) or (cong tan)) gian nan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((hanh trang) OR (thanh trung)) cua nhung ((cong dan) OR (cong tan)) gian nan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - ((hanh trang) OR (thanh trung)) cua nhung ((cong dan) or (cong tan)) gian nan".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((hanh trang) OR (thanh trung)) cua nhung ((cong dan) or (cong tan)) gian nan*.