Perhaps you should try some spelling variations:
danh vien » doanh vien, danh viet, dan vien
toc sach » hoc sach, doc sach, thuoc sach
tham soc » cham soc, tham nuoc, thai son
va danh » va dinh, va dan, va hanh
va tham » van tham, va cham, va thanh
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
soc va » hoc va, loc va, doc va
v nang » va nang, vu nang, van nang
cac te » cac he, cac tu, cac le
cac ke » cac ket, tac ke, cac ky

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: ((te sach) OR (toc sach)) v nang xa hoi. hieu va tham soc va danh vien ((cac te) OR (cac ke))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) v nang xa hoi. hieu va tham soc va danh vien ((cac te) OR (cac ke))~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) v nang xa hoi. hieu va tham soc va danh vien ((cac te) OR (cac ke))*.