Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
tai cua » thai cua, tai cuc, tri cua
dao duc » giao duc, tao duoc
tu sach » thu sach, su sach, te sach
mai hoi » mai khoi, dai hoi, lai hoi
ly hang » ly quang
ly nang » ky nang, ly vang, ly quang
cua te » cua tu

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ly nang) OR (ly hang)) mai hoi. hieu van ((cam xuc) OR (dao duc)) ban thanh tai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ly nang) OR (ly hang)) mai hoi. hieu van ((cam xuc) or (dao duc)) ban thanh tai cua te~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ly nang) OR (ly hang)) mai hoi. hieu van ((cam xuc) or (dao duc)) ban thanh tai cua te*.