Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
danh tai » doanh tai, dinh tai, hanh tai
sach ty » sach y, sach tu, sach thu
va danh » va dinh, va dan, va hanh
ty nang » ky nang, ty xang, ty hang
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, me hoi
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty nang ((ma hoi) or (ma hoa)). hieu ((van lam) or (van nam)) xuc va danh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang ((ma hoi) OR (ma hoa)). hieu ((van lam) OR (van nam)) xuc va danh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang ((ma hoi) or (ma hoa)). hieu ((van lam) or (van nam)) xuc va danh tai cua tre*.