Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
cac xuc » cam xuc, cac nuoc, chat xuc
ty mang » ty xang, tin mang, tri mang
danh vi » hanh vi, dinh vi, danh di
ty hang » ly hang, ty xang, thi hang
hieu ve » hieu va
va danh » va dinh, va dan, va hanh
vi cua » vai cua, di cua
cua te » cua tu
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: su sach ((ty mang) OR (ty hang)) xa hoi. ((hieu ve) or (hieu van)) cac xuc va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty mang) OR (ty hang)) xa hoi. ((hieu ve) OR (hieu van)) cac xuc va danh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty mang) OR (ty hang)) xa hoi. ((hieu ve) or (hieu van)) cac xuc va danh vi cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ((ty mang) OR (ty hang)) xa hoi. ((hieu ve) or (hieu van)) cac xuc va danh vi cua te*.