Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
lang van » dang van, tang van, hoang van
thanh va » thanh van, hanh va, thanh ha
cham duc » pham duc, cham soc, pham duy
cua tre » cua te, cuu tre, cua triet
duc van » duc va, duc tan, duc manh
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay
tu cai » tu cac, tu can, tu bai
va cua » va chua, via cua, ca cua
tu sai » tu bai, tu san, tu lai

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

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