Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
so sach » so sanh, bo sach, co sach
va hanh » van hanh, va thanh, va danh
y hang » ly hang, ty hang, yu hang
hang x » nang x, hoang xa, chang xu
ve cac » vien cac
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y hang x hoi. hieu ((ve cac) or (va cac)) duc va hanh vi ((cua te) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y hang x hoi. hieu ((ve cac) OR (va cac)) duc va hanh vi ((cua te) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: so sach y hang x hoi. hieu ((ve cac) or (va cac)) duc va hanh vi ((cua te) or (va triet))*.