Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh hai » thanh phan, thanh hoa, thanh san
su sach » so sach, vu sach
cao duc » dao duc, cao suc, giao duc
nang xa » lang xa, nang ma, mang xa
hai cua » thai cua, dai cua, hoi cua
hieu ve » hieu va, hieu van
sach lo » sach dao, sach doi, sach hoi
cam duc » cam xuc, pham duc, nam duoc
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: su sach lo ((nang xa) OR (nang x)) hoi. hieu ve ((cam duc) or (cao duc)) van thanh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach lo ((nang xa) OR (nang x)) hoi. hieu ve ((cam duc) OR (cao duc)) van thanh hai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach lo ((nang xa) OR (nang x)) hoi. hieu ve ((cam duc) or (cao duc)) van thanh hai cua te".
• Adding a wildcard symbol may retrieve word variants: su sach lo ((nang xa) OR (nang x)) hoi. hieu ve ((cam duc) or (cao duc)) van thanh hai cua te*.