Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
van hanh » van thanh, ban hanh, van anh
vu hanh » vu khanh, vu thanh, du hanh
hanh ky » hanh kem
nang xa » nang x, lang xa, nang ma
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » va thanh, va danh, ban hanh
cua tre » cua te, cuu tre, cua triet
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: vu hanh ky nang xa hoi. hieu vien cac xuc ((((va hanh) OR (van hanh))) or (gia thanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu hanh ky nang xa hoi. hieu vien cac xuc ((((va hanh) OR (van hanh))) OR (gia thanh)) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu hanh ky nang xa hoi. hieu vien cac xuc ((((va hanh) OR (van hanh))) or (gia thanh)) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: vu hanh ky nang xa hoi. hieu vien cac xuc ((((va hanh) OR (van hanh))) or (gia thanh)) vi cua tre*.