Perhaps you should try some spelling variations:
chat xuc » chat huu, cam xuc, chao xu
ban dang » ban hang, ban dan, van dang
dieu cua » dieu tra
su sach » so sach, vu sach
vu nang » vuc nang, va nang, vu dang
hai hoi » dai hoi, hai moi, hai hai
cac xuc » cam xuc, cac nuoc, cac cuoc
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: su sach ((y nang) or (vu nang)) hai hoi. lieu va ((cac xuc) OR (chat xuc)) ban dang dieu cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (vu nang)) hai hoi. lieu va ((cac xuc) OR (chat xuc)) ban dang dieu cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y nang) or (vu nang)) hai hoi. lieu va ((cac xuc) OR (chat xuc)) ban dang dieu cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) or (vu nang)) hai hoi. lieu va ((cac xuc) OR (chat xuc)) ban dang dieu cua tre*.