Perhaps you should try some spelling variations:
dieu cua » dieu tra
anh dieu » hanh dieu, anh sieu, nganh dieu
tu sach » thu sach, su sach, te sach
vuc van » duc van, luc van, thuc van
xuc van » duc van, luc van, xuc ban
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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