Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
hieu van » hieu va, thien van, lieu va
thai cua » than cua, tai cuc, tri cua
co sach » bo sach, cuon sach, hoc sach
hieu ve » hieu va
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
y nang » ky nang, ly nang, v nang
nang o » nang co, nang ho, nang ro
cua te » cua tu
o hai » co hai, so hai, o lai

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: co sach y nang o hai. ((hieu ve) OR (hieu van)) cam ((xuc van) OR (duc van)) hanh thai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co sach y nang o hai. ((hieu ve) OR (hieu van)) cam ((xuc van) or (duc van)) hanh thai cua te~".
• Adding a wildcard symbol may retrieve word variants: co sach y nang o hai. ((hieu ve) OR (hieu van)) cam ((xuc van) or (duc van)) hanh thai cua te*.