Perhaps you should try some spelling variations:
danh lien » danh kien, danh dien, doanh tien
lien cuc » dien cuc, lien tuc, vien cac
te sach » toc sach
va danh » va dinh, va dan, va hanh
va chat » van chat, va phat, hoa chat
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
sach v » sach va, sach y, sach 2
doc va » duoc va, hoc va, duc 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 (nang ma)) hoi. hieu ((va chat) OR (cao chat)) doc va danh lien cuc te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v ((nang xa) OR (nang ma)) hoi. hieu ((va chat) OR (cao chat)) doc va danh lien cuc te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v ((nang xa) or (nang ma)) hoi. hieu ((va chat) OR (cao chat)) doc va danh lien cuc te".
• Adding a wildcard symbol may retrieve word variants: te sach v ((nang xa) or (nang ma)) hoi. hieu ((va chat) OR (cao chat)) doc va danh lien cuc te*.