Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
tu sach » thu sach, su sach, te sach
danh ca » dan ca, doanh cua, danh cho
va danh » va dinh, va dan, va hanh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, ma hoa, me hoi
xuc va » duc va, tuc va, luc va
y nang » ky nang, ly nang, v nang
ca cua » co cua

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

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