Perhaps you should try some spelling variations:
su triet » su viet, su tien
va thanh » gia thanh, ban thanh, va tinh
le quang » vu quang
ve triet » va trien
thanh vi » hanh vi, thanh va, thanh ve
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
sach le » cach le, sach de, sach lo
cua hoi » cua moi
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.

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