Perhaps you should try some spelling variations:
danh dien » dinh dien, danh kien, danh lien
dien cuc » dien tu, dieu cua, vien cac
van nang » van quang, van ban, van dong
te sach » toc sach
va cham » va chat
va danh » va dinh, va dan, va hanh
va tham » van tham, va thanh, va thuat
soc va » hoc va, loc va, doc va
v nang » va nang, vu nang, voi nang
cuc te » cua te, cuc thue, cuc tieu

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 ((v nang) or (van nang)) xa hoi. hieu ((va cham) OR (va tham)) soc va danh dien cuc te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((v nang) OR (van nang)) xa hoi. hieu ((va cham) OR (va tham)) soc va danh dien cuc te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((v nang) or (van nang)) xa hoi. hieu ((va cham) OR (va tham)) soc va danh dien cuc te".
• Adding a wildcard symbol may retrieve word variants: te sach ((v nang) or (van nang)) xa hoi. hieu ((va cham) OR (va tham)) soc va danh dien cuc te*.