Perhaps you should try some spelling variations:
danh dien » dinh dien, danh kien, danh lien
chat soc » cham soc, chat hoc, chat doc
dien cuc » dien tu, dieu cua, vien cac
te sach » toc sach
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
va danh » va dinh, va dan, va hanh
sach v » sach va, sach y, sach 2
soc va » hoc va, loc va, doc 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 ((nang xa) OR (lang xa)) hoi. hieu va chat soc va danh dien cuc te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v ((nang xa) OR (lang xa)) hoi. hieu va chat soc va danh dien cuc te".
• Adding a wildcard symbol may retrieve word variants: te sach v ((nang xa) OR (lang xa)) hoi. hieu va chat soc va danh dien cuc te*.