Perhaps you should try some spelling variations:
cong quang » luong quang, thong quang, duong quang
hop nhieu » hoc thieu, ho chieu, he nhieu
dung cong » dung trong
ho nhieu » ho chieu, he nhieu, hoc thieu
sinh cua » manh cua, dinh cuu, sinh va
cua dung » cua dang, cua dong, qua dung
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho nhieu) OR (hop nhieu)) tang - nhan sinh cua dung cong quang ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho nhieu) OR (hop nhieu)) tang - nhan sinh cua dung cong quang ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho nhieu) OR (hop nhieu)) tang - nhan sinh cua dung cong quang ((toan cau) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: ((ho nhieu) OR (hop nhieu)) tang - nhan sinh cua dung cong quang ((toan cau) or (toan cao))*.