Perhaps you should try some spelling variations:
hieu dien » lieu dien, bieu dien, hieu hien
dien ban » dien dan, dien van, dieu ban
ban duoc » tan duoc, van duoc, ban thuoc
duoc gia » duoc giao, quoc gia, duc gia
thanh vi » hanh vi, thanh va, nhanh vi
thanh ve » hanh ve, thanh va, thanh vien
nang xa » lang xa, nang ma, mang xa
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: tu cac ky ((nang xa) OR (nang x)) hoi. hieu dien ban duoc gia ((thanh vi) or (thanh ve)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky ((nang xa) OR (nang x)) hoi. hieu dien ban duoc gia ((thanh vi) OR (thanh ve)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky ((nang xa) OR (nang x)) hoi. hieu dien ban duoc gia ((thanh vi) or (thanh ve)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu cac ky ((nang xa) OR (nang x)) hoi. hieu dien ban duoc gia ((thanh vi) or (thanh ve)) cua tre*.