Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
tang van » dang van, hoang van, trong van
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
vai cua » dai cua, hai cua, lai cua
nam tuc » nam thuc, nam truc, nam tu
sach ky » sac ky, sach y, sach ty
tang ma » mang may
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa
sai ky » sac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) or (sai ky)) ((tang ma) OR (tang van)) hoi. hieu van nam tuc va thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sai ky)) ((tang ma) OR (tang van)) hoi. hieu van nam tuc va thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sai ky)) ((tang ma) OR (tang van)) hoi. hieu van nam tuc va thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sai ky)) ((tang ma) OR (tang van)) hoi. hieu van nam tuc va thanh vai cua tre*.