Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
chieu sang » chieu sach, chieu xanh, hieu lang
manh tuong » manh tung, manh cuong, minh tuong
thanh tung » thanh cong
va phuong » va thuong, cac phuong
ho chieu » theo chieu, hoc thieu, mot chieu
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan tap » phan lap, han tap, pha tap

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 - ((manh tuong) or (thanh tung)) va phuong cong dan phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - ((manh tuong) OR (thanh tung)) va phuong cong dan phan tap.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - ((manh tuong) or (thanh tung)) va phuong cong dan phan tap*.