Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
dang van » hoang van, hang va
hieu van » hieu va, thien van, lieu va
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach tu, sach thu
nam duc » nam duoc, pham duc, nam thuc
dau vai » dau va, dau hai, dau tai
cuu tre » cua tre, cau treo
te sach » toc sach
va dau » va dao

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