Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sang » chieu sach, chieu xanh, hieu lang
ho chieu » theo chieu, hoc thieu, doi chieu
tinh cua » trinh cua, tinh chat, tranh cua
sinh cua » manh cua, dinh cuu, sinh va
cong tac » cong ty
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

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 ((tinh cua) or (sinh cua)) nhung cong tac ((phan cau) OR (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh ((tinh cua) OR (sinh cua)) nhung cong tac ((phan cau) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - hanh ((tinh cua) or (sinh cua)) nhung cong tac ((phan cau) OR (phan dau))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh ((tinh cua) or (sinh cua)) nhung cong tac ((phan cau) OR (phan dau))*.