Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
chieu sang » chieu sach, chieu xanh, hieu lang
hanh sinh » hanh tinh, hanh dinh, hinh sinh
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
sinh cua » manh cua, dinh cuu, sinh va
tuan cau » toan cau, quan cau, tuan cu
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 - hanh sinh cua ((nhung cong) OR (dung cong)) van ((tuan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh sinh cua ((nhung cong) OR (dung cong)) van ((tuan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - hanh sinh cua ((nhung cong) OR (dung cong)) van ((tuan cau) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh sinh cua ((nhung cong) OR (dung cong)) van ((tuan cau) or (toan ban))*.