Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thai cua » than cua, tai cuc, tri cua
dang van » hoang van, hang va
cua tre » cua te, cuu tre, cua triet
cao duc » dao duc, cao suc, giao duc
van anh » tuan anh, van minh
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ve cao » va cao, ve bao, ve cac
sai ky » sac ky
su sai » su tai, su hai, su dai

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ky ((dang xa) or (dang van)) hoi. hieu ve cao duc ((van anh) or (van thanh)) thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky ((dang xa) OR (dang van)) hoi. hieu ve cao duc ((van anh) OR (van thanh)) thai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sai ky ((dang xa) or (dang van)) hoi. hieu ve cao duc ((van anh) or (van thanh)) thai cua tre*.