Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
thanh va » thanh van, hanh va, thanh ha
lang xa » lang ha, dang xay, lang van
nam duc » nam duoc, nam thuc, nam buoc
cua tre » cua te, cuu tre, cua triet
san ky » sang ky, dan ky, ban ky
va cua » va chua, via cua, ca cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((san ky) OR (van ky)) lang xa hoi. hieu van ((nam duc) OR (pham duc)) va thanh va cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((san ky) or (van ky)) lang xa hoi. hieu van ((nam duc) OR (pham duc)) va thanh va cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu ((san ky) or (van ky)) lang xa hoi. hieu van ((nam duc) OR (pham duc)) va thanh va cua tre*.