Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
hanh dau » hang dau, danh dau, han dau
dau cau » mau cau, dat cau, da cau
sach ky » sac ky, sach y, sach ty
te sach » toc sach
hieu vu » hieu va, hieu ve, hieu su
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
vu cham » va cham, vu kham, tu cham
tuc va » thuc va, truc va, duc va

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