Perhaps you should try some spelling variations:
danh dien » dinh dien, danh kien, danh lien
dien cuc » dien tu, dieu cua, vien cac
hieu va » hieu qua
va danh » va dinh, va dan, va hanh
sach v » sach va, sach 2, sach vay
soc va » hoc va, loc va, doc va
cuc te » cua te, cuc thue, cuc tieu
x hoi » xa hoi, o hoi, x ho

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: doc ((sach v) OR (sach y)) nang x hoi. ((hieu va) OR (lieu va)) cham soc va danh dien cuc te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((sach v) OR (sach y)) nang x hoi. ((hieu va) or (lieu va)) cham soc va danh dien cuc te~".
• Adding a wildcard symbol may retrieve word variants: doc ((sach v) OR (sach y)) nang x hoi. ((hieu va) or (lieu va)) cham soc va danh dien cuc te*.