Perhaps you should try some spelling variations:
sach tai » sach bai, sach tham, sach dao
tai lang » tai cong, thi lan, tai san
tu sach » thu sach, su sach, te sach
hai cua » thai cua, dai cua, hoi cua
va minh » van minh, vua minh, va kinh
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
va cam » va cham, va cac, va cao
ve cai » va cai, ve cac, ve tai

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 tai lang xa hoi. hieu ((ve cai) or (va cam)) xuc ((va minh) or (qua kinh)) hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tai lang xa hoi. hieu ((ve cai) OR (va cam)) xuc ((va minh) OR (qua kinh)) hai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach tai lang xa hoi. hieu ((ve cai) or (va cam)) xuc ((va minh) or (qua kinh)) hai cua tre*.