Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
te sach » toc sach
dai huu » dao huu, dai hau, dai thua
cac duc » cac du, cao duc, cac dac
van cac » van hac, van cau, van bac
huu tre » huu tri, cuu tre, huu them
ly nang » ky nang, ly hang, ly vang
y nang » ky nang, v nang, may nang
me hoi » le hoi

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