Perhaps you should try some spelling variations:
cuon sach » duong sach, cuoc cach, co sach
cau tren » cu tren, dau tren, ca tren
sach ky » sac ky, sach y, sach ty
va cham » va chat, va tham
hanh va » hang va, hanh vi
xuc va » tuc va, luc va, xac va
va cau » van cau, va cac, va dau
x hoi » xa hoi, o hoi, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: cuon sach ky nang ((x hoi) OR (x ho)). lieu va cham ((xuc va) or (duc va)) hanh va cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cuon sach ky nang ((x hoi) OR (x ho)). lieu va cham ((xuc va) OR (duc va)) hanh va cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cuon sach ky nang ((x hoi) OR (x ho)). lieu va cham ((xuc va) or (duc va)) hanh va cau tren".
• Adding a wildcard symbol may retrieve word variants: cuon sach ky nang ((x hoi) OR (x ho)). lieu va cham ((xuc va) or (duc va)) hanh va cau tren*.