Perhaps you should try some spelling variations:
ly quang » le quang, vu quang
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
sach ly » sach y, sach lo, sach ty
nam xuc » cam xuc, nam xua, nam thuc
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
ca hoi » cua hoi, xa hoi, co hoi
xuc va » duc va, tuc va, luc va
vi cua » di cua

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 ly quang ((ca hoi) or (cau hoi)). hieu van nam xuc va hanh ((vi cua) OR (vai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly quang ((ca hoi) OR (cau hoi)). hieu van nam xuc va hanh ((vi cua) OR (vai cua)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ly quang ((ca hoi) or (cau hoi)). hieu van nam xuc va hanh ((vi cua) OR (vai cua)) triet*".