Perhaps you should try some spelling variations:
hang dieu » hoang dieu, hang dien, sang dieu
su sach » so sach, vu sach
hai hoi » dai hoi, hai moi, hai hai
cac xuc » cam xuc, cac nuoc, chat xuc
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang

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 ((y nang) or (v nang)) hai hoi. lieu va cac xuc ban ((hang dieu) OR (dang dieu)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (v nang)) hai hoi. lieu va cac xuc ban ((hang dieu) OR (dang dieu)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y nang) or (v nang)) hai hoi. lieu va cac xuc ban ((hang dieu) OR (dang dieu)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) or (v nang)) hai hoi. lieu va cac xuc ban ((hang dieu) OR (dang dieu)) cua tre*.