Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh sinh » hanh tinh, hanh dinh, hinh sinh
cua nhung » va nhung
sinh cua » manh cua, dinh cuu, sinh va
ho hieu » ho chieu, hoi hieu, nho hieu
san dau » van dau, ban dau, han dau
san diu » sang dieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - hanh sinh cua nhung cong trinh ((san dau) OR (san diu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - hanh sinh cua nhung cong trinh ((san dau) OR (san diu))".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh sinh cua nhung cong trinh ((san dau) OR (san diu))*.