Perhaps you should try some spelling variations:
ve triet » va trien, su triet
va triet » va thiet, va trien, cua triet
quan cau » quang cao, toan cau, quan ha
lang xa » lang ha, dang xay, lang van
qua cau » qua cac, qua ca, qua cai
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
ky lang » ky nang, ky dang, ky tang
su sach » so sach, vu sach
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky lang xa hoi. hieu ((qua cau) or (quan cau)) luc va hanh vi ((va triet) OR (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky lang xa hoi. hieu ((qua cau) OR (quan cau)) luc va hanh vi ((va triet) OR (ve triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky lang xa hoi. hieu ((qua cau) or (quan cau)) luc va hanh vi ((va triet) OR (ve triet))*".