Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cham sac » cham soc, pham sach, cap sac
ban quan » van quan
sac van » cac van, san van, sat van
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
lang xa » lang ha, dang xay, lang van
sac ky » cac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sac ky) or (sai ky)) lang xa hoi. hieu vu cham sac van thanh ((ban cua) OR (ban quan)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (sai ky)) lang xa hoi. hieu vu cham sac van thanh ((ban cua) OR (ban quan)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) or (sai ky)) lang xa hoi. hieu vu cham sac van thanh ((ban cua) OR (ban quan)) tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (sai ky)) lang xa hoi. hieu vu cham sac van thanh ((ban cua) OR (ban quan)) tre*.