Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
vai cua » dai cua, hai cua, lai cua
va tham » van tham, va thuat
va cham » va chat
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
va cam » va cac, va cao, va cai
xuc va » duc va, tuc va, luc va
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 ty nang ma hoi. lieu ((va cam) or (((va cham) OR (va tham)))) xuc va thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ma hoi. lieu ((va cam) OR (((va cham) OR (va tham)))) xuc va thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang ma hoi. lieu ((va cam) or (((va cham) OR (va tham)))) xuc va thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ma hoi. lieu ((va cam) or (((va cham) OR (va tham)))) xuc va thanh vai cua tre*.