Perhaps you should try some spelling variations:
thanh dao » thanh dat, thanh dam, thanh do
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
huu tre » cuu tre, huu them, huu tien
cac duc » cac du, cao duc, cac dac
van cac » van hac, van cau, van bac
ly nang » ky nang, ly hang, ly vang
huu tri » huu tai
y nang » ky nang, v nang, may nang
ma hoi » mai hoi, xa hoi, ma hoa

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: toc sach ((y nang) OR (ly nang)) ma hoi. hieu van cac duc va thanh dao ((huu tre) OR (huu tri))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((y nang) or (ly nang)) ma hoi. hieu van cac duc va thanh dao ((huu tre) OR (huu tri))~".
• Adding a wildcard symbol may retrieve word variants: toc sach ((y nang) or (ly nang)) ma hoi. hieu van cac duc va thanh dao ((huu tre) OR (huu tri))*.