Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
bach duc » bach tuoc, sach duoc, thach duc
van hanh » van thanh, ban hanh, van anh
ky lang » ky dang, tay lang
ky tang » ky dang, kho tang, ky trong
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
te ban » te bao
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ban ((((ky lang) or (ky nang))) or (ky tang)) xa hoi. hieu vien bach duc van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ban ((((ky lang) OR (ky nang))) OR (ky tang)) xa hoi. hieu vien bach duc van hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te ban ((((ky lang) or (ky nang))) or (ky tang)) xa hoi. hieu vien bach duc van hanh vi cua tre*.