Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
ky dang » ky danh
cac hoc » cach hoc, cac hop, bac hoc
hoc may » hoc ma
tinh ca » tinh cao, tinh cua, tinh va
cua tre » cua te, cuu tre, cua triet
vu sac » vu sach, vu san, va sac
ca cua » co cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ((ky dang) or (ky nang)) xa hoi. hieu vien cac hoc may tinh ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ((ky dang) OR (ky nang)) xa hoi. hieu vien cac hoc may tinh ca cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sac ((ky dang) or (ky nang)) xa hoi. hieu vien cac hoc may tinh ca cua tre*.