Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
dinh va » dinh van, dinh ve, tinh va
cu tren » tu tren, dua tren
tuc va » thuc va, truc va, tuc xa
va cu » va cau, va chu, va su

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 hoi. hieu van nam ((duc va) or (tuc va)) dinh va cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. hieu van nam ((duc va) OR (tuc va)) dinh va cu tren.
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. hieu van nam ((duc va) or (tuc va)) dinh va cu tren*.