Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach
vu sach » vu bach, vu khach
van cam » van nam, van lam, van cau
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, ma hoa, me hoi
xuc va » duc va, tuc va, luc va

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: ((su sach) OR (vu sach)) y nang ((ma hoi) OR (xa hoi)). hieu van cam xuc va thanh dai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) y nang ((ma hoi) OR (xa hoi)). hieu van cam xuc va thanh dai cua triet~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) y nang ((ma hoi) OR (xa hoi)). hieu van cam xuc va thanh dai cua triet*.