Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh hai » thanh phan, thanh hoa, thanh san
sach thu » sach thue, sach thieu, sach tham
hai cua » thai cua, dai cua, hoi cua
hieu ve » hieu va, hieu van
sach ly » sach y, sach lo, sach ty
vang xa » lang xa, mang xa, ang xa
cua te » cua tu

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 ly) or (sach thu)) vang xa hoi. hieu ve ((cam xuc) or (giao duc)) van thanh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ly) OR (sach thu)) vang xa hoi. hieu ve ((cam xuc) OR (giao duc)) van thanh hai cua te.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ly) or (sach thu)) vang xa hoi. hieu ve ((cam xuc) or (giao duc)) van thanh hai cua te*.