Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dinh va » dinh van, dinh ve, tinh va
sach ky » sac ky, sach y, sach ty
te sach » toc sach
lang ha » long ha
lang xa » dang xay, lang van
cuu tre » cua tre, cau tren, cau treo
tuc va » thuc va, truc va, duc va
va cuu » va cau, va chu, va huu

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