Perhaps you should try some spelling variations:
phuong cong » phong cong, phung cong, phuong hoang
phuong dong » phuong dung, phuong hoang, chuong duong
chieu sang » chieu sach, chieu xanh, hieu lang
hang doanh » hanh doanh, nhung doanh, van doanh
mang doan » quang doan, trang doan, manh toan
ho chieu » theo chieu, hoc thieu, doi chieu
toan cau » toan cao, toan ban, toan 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 - anh ((mang doan) OR (hang doanh)) ((phuong cong) or (phuong dong)) tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - anh ((mang doan) OR (hang doanh)) ((phuong cong) OR (phuong dong)) tinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - anh ((mang doan) OR (hang doanh)) ((phuong cong) or (phuong dong)) tinh toan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - anh ((mang doan) OR (hang doanh)) ((phuong cong) or (phuong dong)) tinh toan cau*.