Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hai cua » thai cua, dai cua, hoi cua
tuc va » thuc va, truc va, duc va
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: toc sach ky tang xa hoi. hieu van nam ((tuc va) or (tuc xa)) thanh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky tang xa hoi. hieu van nam ((tuc va) OR (tuc xa)) thanh hai cua te.
• Adding a wildcard symbol may retrieve word variants: toc sach ky tang xa hoi. hieu van nam ((tuc va) or (tuc xa)) thanh hai cua te*.