Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
chieu sang » chieu sach, chieu xanh, hieu lang
thong cong » trong cong, tong cong, thong thong
hanh dung » thanh dung, anh dung, hanh dong
khoan cam » khoa cam, khoan va, phan cam
ho chieu » theo chieu, hoc thieu, doi chieu
dung cua » dung luan, dung cho
than cap » khan cap, thanh lap, thanh cac

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 - hanh dung cua ((nhung cong) OR (thong cong)) san ((than cap) or (khoan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh dung cua ((nhung cong) OR (thong cong)) san ((than cap) OR (khoan cam))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - hanh dung cua ((nhung cong) OR (thong cong)) san ((than cap) or (khoan cam))*".