Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
ve triet » va trien, su triet
hieu van » hieu va, thien van, lieu va
va triet » va thiet, va trien, cua triet
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
van cau » van dau, van hau, van chat
nang xa » nang x, lang xa, nang ma
luc va » duc va, tuc va, loc va
xuc va » duc va, tuc va, xac va

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

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