Perhaps you should try some spelling variations:
nhung khuong » nhung phuong, nhung huong, nhung chong
khuong tinh » chuong trinh, phuong trinh, phuong binh
chieu sang » chieu sach, chieu xanh, hieu lang
doc chieu » doc hieu, doi chieu, toc thieu
doanh cua » doanh luan
manh cua » ban cua
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

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