Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
hanh hai » thanh hai, nhanh hai, hang hai
nang ma » tang ma, sang ma, nang cao
vu cham » va cham, vu kham, tu cham
xuc van » duc van, luc van, vuc van
hai cua » thai cua, dai cua, hoi 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
ve cac » va cac, vien cac

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 ((ve cac) or (vu cham)) xuc van hanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ma hoi. hieu ((ve cac) OR (vu cham)) xuc van hanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ma hoi. hieu ((ve cac) or (vu cham)) xuc van hanh hai cua tre*.