Perhaps you should try some spelling variations:
danh may » hanh may, mang may, danh bat
va thieu » va thiet, va hieu, va tieu
te sach » toc sach
sach ky » sac ky, sach y, sach ty
dam tuc » dam thuc, dao tuc, nam thuc
va danh » va dinh, va dan, va hanh
ma hoi » mai hoi, ma hoa, me hoi
dam tu » nam tu, cam tu, tam tu
may va » may vi, day 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 ((ma hoi) OR (xa hoi)). lieu va ((dam tuc) or (dam tu)) va danh may va thieu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((ma hoi) OR (xa hoi)). lieu va ((dam tuc) OR (dam tu)) va danh may va thieu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ((ma hoi) OR (xa hoi)). lieu va ((dam tuc) or (dam tu)) va danh may va thieu".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((ma hoi) OR (xa hoi)). lieu va ((dam tuc) or (dam tu)) va danh may va thieu*.