Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
doanh luan » doanh nhan
nhung cong » dung cong, thong cong, hang cong
cong tac » cong ty
tac nhan » tao nhan, cac nhan, dac nhan
nhan cap » khan cap, than cap, nhan cach

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

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