Perhaps you should try some spelling variations:
va trien » va truyen, va thiet, va tuyen
hieu van » hieu va, thien van, lieu va
va triet » va thiet, ve triet, cua triet
thanh ke » thanh ket, thanh ve, thanh de
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
co sach » bo sach, cuon sach, hoc sach
nam xuc » cam xuc, nam xua, nam thuc
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 (co sach)) ky dang xa hoi. hieu van nam xuc va thanh ke ((va triet) OR (va trien))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (co sach)) ky dang xa hoi. hieu van nam xuc va thanh ke ((va triet) OR (va trien))~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (co sach)) ky dang xa hoi. hieu van nam xuc va thanh ke ((va triet) OR (va trien))*.