Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh de » hanh de, thanh ve, thanh do
cua viet » ca viet, cua vat, cua dieu
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu va » lieu va, hieu qua
va cham » va chat, va tham
soc van » hoc van, oc van, sac van
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan 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 san ky dang xa hoi. hieu va cham soc van thanh de ((cua viet) or (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky dang xa hoi. hieu va cham soc van thanh de ((cua viet) OR (hoa viet)).
• Adding a wildcard symbol may retrieve word variants: tu san ky dang xa hoi. hieu va cham soc van thanh de ((cua viet) or (hoa viet))*.