Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
hoang van » hang va
ky hoang » huy hoang, duy hoang, ky nang
vien cac » vien bach, vien dai, vien da
duc manh » suc manh, duc anh, duc minh
hanh vai » hanh vi, hanh va, hanh tai
so sanh » do sanh
sanh ky » hanh ky, sang ky, nganh ky
van hoi » van hoa, van hoc, van hoe
duc van » duc va, duc tan, duc phan
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh ky hoang van hoi. hieu vien cac ((duc van) or (duc manh)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ky hoang van hoi. hieu vien cac ((duc van) OR (duc manh)) hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: so sanh ky hoang van hoi. hieu vien cac ((duc van) or (duc manh)) hanh vai cua tre*.