Perhaps you should try some spelling variations:
sieu viet » su viet, dien viet, bien viet
ve triet » va trien, su triet
dang xay » dang van, van xay
sach ky » sac ky, sach y, sach ty
te sach » toc sach
lang xa » lang ha, lang van
va tuc » va thuc, va tu, va tac
da tac » va tac, da tai, da tao
va dau » va dao
dau vi » dau ve, dau va, dat vi
vi ve » va ve, gi ve, ve ve

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 ky ((lang xa) or (dang xay)) hoi. sieu viet ((va tuc) or (da tac)) va dau vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((lang xa) OR (dang xay)) hoi. sieu viet ((va tuc) OR (da tac)) va dau vi ve triet.
• Adding a wildcard symbol may retrieve word variants: te sach ky ((lang xa) or (dang xay)) hoi. sieu viet ((va tuc) or (da tac)) va dau vi ve triet*.