Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa
nang mai » nang ma, nang tai, lang mai
vien cac » vien bach, vien dai, vien da
mai hoi » mai khoi, dai hoi, lai hoi
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
su cac » tu cac, su cao, su can

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: su cac ky nang mai hoi. hieu ((va cac) OR (vien cac)) xuc van ((thanh hai) OR (thanh san)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac ky nang mai hoi. hieu ((va cac) or (vien cac)) xuc van ((thanh hai) OR (thanh san)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: su cac ky nang mai hoi. hieu ((va cac) or (vien cac)) xuc van ((thanh hai) OR (thanh san)) cua tre*.