Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
canh manh » lanh manh, canh tranh, cach mang
manh chua » manh cua, tranh chua, benh chua
chua xang » chua nang, chuc nang, chu bang
xang song » nang song, bang song, lang song
ban than » ban thanh, van thanh, ban hang
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) OR (chinh sach)) - canh manh chua xang song ((ban than) or (van tuan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chinh sach)) - canh manh chua xang song ((ban than) OR (van tuan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chinh sach)) - canh manh chua xang song ((ban than) or (van tuan)) cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chinh sach)) - canh manh chua xang song ((ban than) or (van tuan)) cao*.