Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh binh » thai binh, than kinh, tinh binh
hieu manh » hieu nganh, dieu hanh, hien hanh
va phuong » va thuong, cac phuong
manh toan » thanh toan, tinh toan
binh va » tinh va, sinh va, benh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (chieu xanh)) - thanh binh va phuong cong ((manh toan) OR (anh tuan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu xanh)) - thanh binh va phuong cong ((manh toan) OR (anh tuan)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (chieu xanh)) - thanh binh va phuong cong ((manh toan) OR (anh tuan)) tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu xanh)) - thanh binh va phuong cong ((manh toan) OR (anh tuan)) tap*.