Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
luan phung » luan phuong, luan chung, luan phong
phung cong » nhung cong, phong cong, nhung chong
hieu lang » hieu quang, nhieu tang, hieu van
hanh dung » thanh dung, anh dung, hanh dong
cong van » cong vang, cong san, song van
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: ho ((chieu sang) OR (hieu lang)) - hanh dung luan phung cong van ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu lang)) - hanh dung luan phung cong van ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (hieu lang)) - hanh dung luan phung cong van ((toan cau) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (hieu lang)) - hanh dung luan phung cong van ((toan cau) or (toan ban))*.