Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dieu cua » dieu tra
so sang » so sanh, so dang, so lang
sang ky » sang kyo, dang ky, tang ky
nang xa » nang x, lang xa, nang ma
van cac » van hac, van cau, van bac
cac tu » cac thu, cach tu, cac du
de cua » te cua
le cua » ly cua

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: so sang ky nang xa hoi. hieu van cac tu cac dan ((((de cua) OR (dieu cua))) OR (le cua)) te~.
• Adding a wildcard symbol may retrieve word variants: so sang ky nang xa hoi. hieu van cac tu cac dan ((((de cua) or (dieu cua))) or (le cua)) te*.