Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
cam duc » cam xuc, pham duc, nam duoc
hai cua » thai cua, dai cua, hoi cua
cao duc » dao duc, cao suc, giao duc
sach ly » sach y, sach lo, sach hay
sach ty » sach y, sach tu, sach thu
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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 ty)) nang x hoi. hieu van ((cam duc) or (cao duc)) ban thanh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ly) OR (sach ty)) nang x hoi. hieu van ((cam duc) OR (cao duc)) ban thanh hai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ly) OR (sach ty)) nang x hoi. hieu van ((cam duc) or (cao duc)) ban thanh hai cua te*".