Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
sach loai » sach bai, cac loai, sach doi
loai nang » loai nam, luan nang, loai san
hanh vai » hanh vi, hanh va, hanh tai
cua tre » cua te, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
cuu tre » cau tren, cau treo
va cau » van cau, va cac, va cao
va dau » va dao
x hoi » xa hoi, o hoi, x ho

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 loai nang x hoi. hieu ((va cau) or (va dau)) duc va hanh vai ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach loai nang x hoi. hieu ((va cau) OR (va dau)) duc va hanh vai ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach loai nang x hoi. hieu ((va cau) or (va dau)) duc va hanh vai ((cua tre) OR (cuu tre))*".