Perhaps you should try some spelling variations:
sach thien » sach thieu, sach tien, cach thien
dua tren » dung tren
thanh va » thanh van, hanh va, thanh ha
va thanh » gia thanh, ban thanh, va tinh
lang van » dang van, tang van, hoang van
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
lam tuc » lam thuoc, lam truoc, luat tuc
van lam » van nam
lang xa » lang ha, dang xay
cuu tre » cua tre, cau tren, cau treo
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach thien ((lang xa) OR (lang van)) hoi. hieu van lam tuc va thanh va ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thien ((lang xa) OR (lang van)) hoi. hieu van lam tuc va thanh va ((dua tren) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thien ((lang xa) OR (lang van)) hoi. hieu van lam tuc va thanh va ((dua tren) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: su sach thien ((lang xa) OR (lang van)) hoi. hieu van lam tuc va thanh va ((dua tren) or (cuu tre))*.