Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
thanh tai » thanh toan, doanh tai, thanh san
thu sach » tu sach, thuat sach, thuoc sach
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
tang ma » mang may, tang van
xuc va » duc va, tuc va, luc va
va cam » va cham, va cac, va cao

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 ((tang ma) or (lang xa)) hoi. lieu va cam xuc va ((thanh tai) OR (thanh hai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((tang ma) OR (lang xa)) hoi. lieu va cam xuc va ((thanh tai) OR (thanh hai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty ((tang ma) or (lang xa)) hoi. lieu va cam xuc va ((thanh tai) OR (thanh hai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((tang ma) or (lang xa)) hoi. lieu va cam xuc va ((thanh tai) OR (thanh hai)) cua tre*.