Perhaps you should try some spelling variations:
thanh vi » thanh va, thanh ve, nhanh vi
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
va tham » van tham, va thanh, va thuat
va cham » va chat
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang ma hoi. lieu ((va cham) OR (va tham)) tuc va ((thanh vi) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ma hoi. lieu ((va cham) OR (va tham)) tuc va ((thanh vi) OR (hanh vi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang ma hoi. lieu ((va cham) OR (va tham)) tuc va ((thanh vi) or (hanh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ma hoi. lieu ((va cham) OR (va tham)) tuc va ((thanh vi) or (hanh vi)) cua tre*.