Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phuong hoang
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh binh » thai binh, than kinh, tinh binh
phung cong » nhung cong, phong cong, nhung chong
manh toan » thanh toan, anh tuan, tinh toan
toan tap » toan ban
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 ((thieu xanh) or (chieu xanh)) - thanh binh va ((phuong cong) OR (phung cong)) manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - thanh binh va ((phuong cong) OR (phung cong)) manh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (chieu xanh)) - thanh binh va ((phuong cong) OR (phung cong)) manh toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu xanh)) - thanh binh va ((phuong cong) OR (phung cong)) manh toan tap*.