Perhaps you should try some spelling variations:
sach vay » sach va, sach hay, sach nay
cau treo » cau theo, cau tren, cau triet
nang xa » nang x, lang xa, nang ma
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
luc va » tuc va, loc va
dan va » doan va, dan ca, ban va
va cau » van cau, va cac, va dau

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach vay) OR (sach y)) nang xa hoi. hieu vu cham ((luc va) OR (duc va)) dan va cau treo~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach vay) or (sach y)) nang xa hoi. hieu vu cham ((luc va) OR (duc va)) dan va cau treo~".
• Adding a wildcard symbol may retrieve word variants: te ((sach vay) or (sach y)) nang xa hoi. hieu vu cham ((luc va) OR (duc va)) dan va cau treo*.