Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
cuc tieu » muc tieu, cac tieu, cach tieu
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
ca danh » cao danh, cau danh, va danh
va nam » van nam, ha nam, va nay
ca dan » cac dan, ca dao
cuc te » cua te, cuc thue

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. lieu va nam thuc ((ca danh) or (ca dan)) tai ((cuc te) OR (cuc tieu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. lieu va nam thuc ((ca danh) OR (ca dan)) tai ((cuc te) OR (cuc tieu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. lieu va nam thuc ((ca danh) or (ca dan)) tai ((cuc te) OR (cuc tieu))".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. lieu va nam thuc ((ca danh) or (ca dan)) tai ((cuc te) OR (cuc tieu))*.