Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sang » chieu sach, chieu xanh, hieu lang
hoc chieu » hoc thieu, ho chieu, hoc hien
van doanh » toan doanh, van dong, van thanh
doanh cua » doanh luan
cua nhung » va nhung
cong dan » cong san, cong tan, huong dan
toan tai » toan tap, doanh tai, toan cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sang - van doanh cua nhung cong dan ((toan tai) or (((toan ban) OR (van ban))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - van doanh cua nhung cong dan ((toan tai) OR (((toan ban) OR (van ban)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sang - van doanh cua nhung cong dan ((toan tai) or (((toan ban) OR (van ban))))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - van doanh cua nhung cong dan ((toan tai) or (((toan ban) OR (van ban))))*.