Perhaps you should try some spelling variations:
thanh va » thanh van, hanh va, thanh ha
tang van » dang van, hoang van, trong van
te sach » toc sach
cao toc » cac toc, cao hoc, cao thuoc
toc gia » toc giay, tac gia, quoc gia
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
va cao » va cac, va co, va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y ((lang xa) or (tang van)) hoi. hieu va cao toc gia ((hanh vi) or (thanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((lang xa) OR (tang van)) hoi. hieu va cao toc gia ((hanh vi) OR (thanh va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y ((lang xa) or (tang van)) hoi. hieu va cao toc gia ((hanh vi) or (thanh va)) cua tre*.