Perhaps you should try some spelling variations:
dinh lien » dinh dien, dinh kien, dinh tien
lien cuc » dien cuc, lien tuc, vien cac
hieu va » lieu va, hieu qua
va cham » va chat, va tham
nang xa » nang x, lang xa, nang ma
sach va » sach xa, sach ha, sach dao
sach v » sach y, sach 2, sach vay
soc va » hoc va, doc va, goc va
loc va » hoc va, luc va
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) or (sach va)) nang xa hoi. hieu va cham ((soc va) OR (loc va)) dinh lien cuc te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach v) OR (sach va)) nang xa hoi. hieu va cham ((soc va) OR (loc va)) dinh lien cuc te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach v) or (sach va)) nang xa hoi. hieu va cham ((soc va) OR (loc va)) dinh lien cuc te".
• Adding a wildcard symbol may retrieve word variants: te ((sach v) or (sach va)) nang xa hoi. hieu va cham ((soc va) OR (loc va)) dinh lien cuc te*.