Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cua triet » cua viet, su triet, va triet
thai cua » than cua, tai cuc, tri cua
thanh le » thinh le, thanh ve, thanh de
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
va thai » van thai, va tai, va tham
cua van » cua ban, cua vat, cua dan
cua tre » cua te, cuu tre, dua tren
bach y » sach y

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: vu bach y ((nang xa) OR (lang xa)) hoi. lieu va thai cua van thanh le ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu bach y ((nang xa) OR (lang xa)) hoi. lieu va thai cua van thanh le ((cua tre) or (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: vu bach y ((nang xa) OR (lang xa)) hoi. lieu va thai cua van thanh le ((cua tre) or (cua triet))*.