Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
tham hoc » thai hoc, tham hoa, than hoc
ky tang » ky dang, kho tang, ky trong
va hanh » van hanh, va thanh, va danh
hanh ve » hanh vi, hanh va, hanh kem
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
ve cua » le cua, de cua, te cua

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

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