Perhaps you should try some spelling variations:
sach tranh » canh tranh
thuat sach » thuat lanh, thuat san
sach nang » cach mang, sach dung, sach danh
tranh tai » tranh thai, trinh tai, thanh tai
sach luan » sach luyen, sach han
nang tri » nang tai, lang tri, nang thi
thu sach » tu sach, thuoc sach, thu hoach
san luan » dan luan, tang luan, hang luan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((( thuat sach nang tri ) or ( thu sach tranh tai ))) or ( thu ((sach luan) OR (san luan)) tri ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( thuat sach nang tri ) OR ( thu sach tranh tai ))) OR ( thu ((sach luan) OR (san luan)) tri ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( thuat sach nang tri ) or ( thu sach tranh tai ))) or ( thu ((sach luan) OR (san luan)) tri ))*".