Perhaps you should try some spelling variations:
dung tren » dung trong, dung trung
cham xuc » cam xuc, chat xuc, cham soc
toc sach » hoc sach, doc sach, thuoc sach
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va

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: ((te sach) OR (toc sach)) ky nang x ho. hieu va cham xuc va hanh vi ((dua tren) OR (dung tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ky nang x ho. hieu va cham xuc va hanh vi ((dua tren) OR (dung tren))~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ky nang x ho. hieu va cham xuc va hanh vi ((dua tren) OR (dung tren))*.