Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thanh hai » thanh phan, thanh hoa, thanh san
pham lao » pham bao, pham lan, pham luan
va thanh » gia thanh, ban thanh, va tinh
thai loi » tai loi, thai doi, thai lai
nang tai » hang tai, tang tai, sang tai
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
tai hoi » tai khoi, dai hoi, tai hai
ty nang » ky nang, ty xang, ty hang
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ty nang tai hoi. hieu va ((thai loi) or (pham lao)) va thanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ty nang tai hoi. hieu va ((thai loi) OR (pham lao)) va thanh hai cua tre*.