Perhaps you should try some spelling variations:
dien sach » dien anh
tuoc va » thuoc va, nuoc va, duoc va
xanh di » vanh dai, xanh tai
danh di » danh du, danh dien, danh gia
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cua tuc » cua duc, cua tu, cua thuoc

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

• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang xa hoi. hieu ((dien sach) OR (vien bach)) tuoc va ((danh di) OR (xanh di)) cua tuc~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang xa hoi. hieu ((dien sach) or (vien bach)) tuoc va ((danh di) OR (xanh di)) cua tuc~".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang xa hoi. hieu ((dien sach) or (vien bach)) tuoc va ((danh di) OR (xanh di)) cua tuc*.