Perhaps you should try some spelling variations:
nphan cong » pham cong, phap cong, phan cung
chieu sang » chieu sach, chieu xanh, hieu lang
cho chieu » ho chieu, theo chieu, chon chien
phan cong » thanh cong
dung dang » dung dan, dung dong, dung danh
dang hanh » dang thanh, ban hanh, dang van
dan dung » van dung, tin dung, ap dung
hanh phi » thanh pho, hanh phuc, hanh phan
phi dau » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: cho chieu sang - ((phan cong) or (nphan cong)) dan dung dang hanh phi dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cho chieu sang - ((phan cong) OR (nphan cong)) dan dung dang hanh phi dau.
• Adding a wildcard symbol may retrieve word variants: cho chieu sang - ((phan cong) or (nphan cong)) dan dung dang hanh phi dau*.