Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
ty nang » ty xang, ty hang, ly nang
hieu ve » hieu va
xuc va » duc va, tuc va, luc va
va anh » van anh, va danh, va hanh
anh va » hanh va
va cua » va chua, via cua, ca cua
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ty nang) OR (ky nang)) xa hoi. ((hieu ve) OR (hieu van)) cam xuc va anh va cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ty nang) or (ky nang)) xa hoi. ((hieu ve) OR (hieu van)) cam xuc va anh va cua te~".
• Adding a wildcard symbol may retrieve word variants: thu sach ((ty nang) or (ky nang)) xa hoi. ((hieu ve) OR (hieu van)) cam xuc va anh va cua te*.