Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh hai » thanh hai, nhanh hai, hang hai
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
cac ho » cac hoc, cac he, bac ho
cac co » cac cong
x hoi » xa hoi, o hoi, x ho

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 ty nang x hoi. hieu va ((((cac ho) or (cac hop))) or (cac co)) va hanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang x hoi. hieu va ((((cac ho) OR (cac hop))) OR (cac co)) va hanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang x hoi. hieu va ((((cac ho) or (cac hop))) or (cac co)) va hanh hai cua tre*.