Perhaps you should try some spelling variations:
phuong cong » phuong dong, phung cong, phuong hoang
chieu xanh » chieu sach, chieu sang, chieu tinh
phong cong » phong chong, thong cong, chong cong
hieu manh » hieu nganh, dieu hanh, hien hanh
manh hung » anh huong
hung cua » huong cua, chung cua, khung cua
tan toan » tan tran, tap toan, van toan
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: hoc ((chieu xanh) or (hieu manh)) - manh hung cua ((phuong cong) OR (phong cong)) tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (hieu manh)) - manh hung cua ((phuong cong) OR (phong cong)) tan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (hieu manh)) - manh hung cua ((phuong cong) OR (phong cong)) tan toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (hieu manh)) - manh hung cua ((phuong cong) OR (phong cong)) tan toan cau*.