Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
va triet » va thiet, va trien, ve triet
vien cac » vien bach, vien dai, vien da
nang xa » nang x, lang xa, nang ma
ve cac » va cac
san ky » sang ky, van ky, dan ky
tuc va » thuc va, truc va, tuc xa
hai va » hai van, thai va, hoi va
te san » te ban, ke san, tu san

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) OR (vien cac)) ((tuc va) OR (thuc vat)) thanh hai va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te san ky nang xa hoi. hieu ((ve cac) OR (vien cac)) ((tuc va) or (thuc vat)) thanh hai va triet~".
• Adding a wildcard symbol may retrieve word variants: te san ky nang xa hoi. hieu ((ve cac) OR (vien cac)) ((tuc va) or (thuc vat)) thanh hai va triet*.