Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
cao duc » dao duc, cao suc, giao duc
sach ly » sach y, sach lo, sach ty
tu sach » thu sach, su sach, te sach
hang xa » hoang xa, hang va, lang xa
hang ca » hang va, nang cao, hang tai
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 ((hang xa) or (hang ca)) hoi. hieu van ((pham duc) or (cao duc)) van thanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly ((hang xa) OR (hang ca)) hoi. hieu van ((pham duc) OR (cao duc)) van thanh dai cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach ly ((hang xa) or (hang ca)) hoi. hieu van ((pham duc) or (cao duc)) van thanh dai cua te*.