Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
hanh trang » thanh trung, hanh trinh, minh trang
thong cong » trong cong, tong cong, thong thong
cua thong » cua thuong, cua khong, cua tong
cong dan » cong san, cong tan, huong dan
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) or (chinh sach)) - ((hanh trang) OR (canh tranh)) cua thong cong dan gian nan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chinh sach)) - ((hanh trang) OR (canh tranh)) cua thong cong dan gian nan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) or (chinh sach)) - ((hanh trang) OR (canh tranh)) cua thong cong dan gian nan".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chinh sach)) - ((hanh trang) OR (canh tranh)) cua thong cong dan gian nan*.