Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
hai van » thai van, ha van, hai tan
te san » te ban, ke san, tu san
san ky » sang ky, van ky, dan ky
ve cac » va cac, vien cac
tuc va » thuc va, truc va, tuc xa
hai va » thai va, hoi va, mai va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te san ky nang xa hoi. hieu ve cac ((tuc va) OR (thuc vat)) thanh ((hai va) OR (hai van)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te san ky nang xa hoi. hieu ve cac ((tuc va) or (thuc vat)) thanh ((hai va) OR (hai van)) triet~".
• Adding a wildcard symbol may retrieve word variants: te san ky nang xa hoi. hieu ve cac ((tuc va) or (thuc vat)) thanh ((hai va) OR (hai van)) triet*.