Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
cua nhung » va nhung
cong cua » cong cu, dong cua, huong cua
cong ban » cong bang, cong san, cong tan
ban toan » bai toan, ban than, van toan
toan cau » toan cao, toan ban, toan tap
tinh » trinh, dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((trieu tinh) or (hieu lang)) - thanh cong cua nhung cong ban toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((trieu tinh) OR (hieu lang)) - thanh cong cua nhung cong ban toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((trieu tinh) or (hieu lang)) - thanh cong cua nhung cong ban toan cau*.