Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
thanh tai » thanh toan, doanh tai, thanh san
hoc sach » hoc sinh, hoc cac, hoc anh
han tai » hang tai, nhan tai, van tai
cua tre » cua te, cuu tre, cua triet
sach ly » sach y, sach lo, sach ty
cac tuc » cac toc, cac tu, cac tac
hieu ve » hieu va, hieu van
hang xa » hoang xa, hang va, hang ca
ly hang » ly quang
ve cac » va cac, vien cac
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ly hang xa hoi. hieu ve cac tuc va ((han tai) or (((thanh tai) OR (thanh hai)))) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ly hang xa hoi. hieu ve cac tuc va ((han tai) OR (((thanh tai) OR (thanh hai)))) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ly hang xa hoi. hieu ve cac tuc va ((han tai) or (((thanh tai) OR (thanh hai)))) cua tre".
• Adding a wildcard symbol may retrieve word variants: hoc sach ly hang xa hoi. hieu ve cac tuc va ((han tai) or (((thanh tai) OR (thanh hai)))) cua tre*.