Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
canh manh » lanh manh, canh tranh, cach mang
cua huong » cua phuong, cua thuong, cua truong
tuong dan » huong dan, tung dan, xuong dan
cua hong » cua khong, cua cong, cua hang
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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 (chieu sang)) - canh manh ((cua hong) OR (cua huong)) tuong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu sang)) - canh manh ((cua hong) OR (cua huong)) tuong dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) or (chieu sang)) - canh manh ((cua hong) OR (cua huong)) tuong dan than cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chieu sang)) - canh manh ((cua hong) OR (cua huong)) tuong dan than cau*.