Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
thanh vi » hanh vi, thanh va, thanh ve
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
sach va » sach xa, sach ha, sach dao
sach v » sach y, sach 2, sach vay
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
vi cau » va cau, ve cau, di cau
va coc » va cuoc, va cac, va hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach v) or (sach va)) nang xa hoi. hieu va coc ((luc va) OR (tuc va)) thanh vi cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach v) OR (sach va)) nang xa hoi. hieu va coc ((luc va) OR (tuc va)) thanh vi cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach v) or (sach va)) nang xa hoi. hieu va coc ((luc va) OR (tuc va)) thanh vi cau treo".
• Adding a wildcard symbol may retrieve word variants: tu ((sach v) or (sach va)) nang xa hoi. hieu va coc ((luc va) OR (tuc va)) thanh vi cau treo*.