Perhaps you should try some spelling variations:
thanh soc » thanh son, nhanh soc, thanh hoc
qua thanh » quan thanh, cua thanh, qua than
danh dien » dinh dien, danh kien, danh lien
dien cuc » dien tu, dieu cua, vien cac
va danh » va dinh, va dan, va hanh
cuc tre » duc tre, cua tre, cuu tre
sach v » sach va, sach y, sach vay
sach 2 » sach y
soc va » hoc va, loc va, doc va
x hoi » xa hoi, o hoi, 5 hoi

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 v) OR (sach 2)) nang ((x hoi) OR (x ho)). hieu qua thanh soc va danh dien cuc tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach v) or (sach 2)) nang ((x hoi) OR (x ho)). hieu qua thanh soc va danh dien cuc tre~".
• Adding a wildcard symbol may retrieve word variants: te ((sach v) or (sach 2)) nang ((x hoi) OR (x ho)). hieu qua thanh soc va danh dien cuc tre*.