Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
van cac » van hac, van cau, van bac
cac duc » cac du, cao duc, cac dac
dai huu » dao huu, dai hau, dai thua
huu tri » huu tai
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, ma hoa, va hoi
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 ((((ma hoi) OR (me hoi))) OR (xa hoi)). hieu van cac duc va thanh dai huu tri~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((((ma hoi) OR (me hoi))) or (xa hoi)). hieu van cac duc va thanh dai huu tri~".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((((ma hoi) OR (me hoi))) or (xa hoi)). hieu van cac duc va thanh dai huu tri*.