Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
dao cau » dat cau, tao cau, dao cac
tuc va » thuc va, truc va, duc va
da cau » dat cau, va cau

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