Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
chat xuc » chat huu, cam xuc, chat cua
hanh dau » hang dau, danh dau, han dau
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
dau cua » dai cua, day cua, cau cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
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: thu sach y nang ma hoi. hieu van ((chat xuc) or (chao xu)) va hanh dau cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ma hoi. hieu van ((chat xuc) OR (chao xu)) va hanh dau cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ma hoi. hieu van ((chat xuc) or (chao xu)) va hanh dau cua tre*.