Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cham xuc » cam xuc, chat xuc, cham soc
manh cua » doanh cua, ban cua
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
va cham » va chat, va tham
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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 y nang ma hoa. hieu va cham xuc ((van ban) or (ban thanh)) manh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ma hoa. hieu va cham xuc ((van ban) OR (ban thanh)) manh cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ma hoa. hieu va cham xuc ((van ban) or (ban thanh)) manh cua tre*.