Perhaps you should try some spelling variations:
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
sach va » sach xa, sach ha, sach dao
sach v » sach y, sach 2, sach vay
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach v) or (sach va)) lang xa hoi. hieu va cam ((luc va) OR (tuc va)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach v) OR (sach va)) lang xa hoi. hieu va cam ((luc va) OR (tuc va)) hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sach v) or (sach va)) lang xa hoi. hieu va cam ((luc va) OR (tuc va)) hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: toc ((sach v) or (sach va)) lang xa hoi. hieu va cam ((luc va) OR (tuc va)) hanh vi cua tre*.