Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hanh va » hang va
va cham » va chat, va tham
sang xa » song xa, lang xa, sang ma
ky sang » ky nang, ky dang, ky tang
chi tre » choi tre, cho tre, chi tro
va cam » va cac, va cao, va cai
xuc va » duc va, tuc va, luc va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky sang xa hoi. hieu ((va cam) OR (va cham)) xuc va ((hanh va) OR (hanh vi)) chi tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky sang xa hoi. hieu ((va cam) or (va cham)) xuc va ((hanh va) OR (hanh vi)) chi tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky sang xa hoi. hieu ((va cam) or (va cham)) xuc va ((hanh va) OR (hanh vi)) chi tre*.