Perhaps you should try some spelling variations:
truong toan » truong ton, trong toan, truong tan
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
luong toan » luong thanh, luong tai, luong tin
va thong » va thuong, va phuong, he thong
tung va » trung va, tuong va, dung va

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 xanh) or (chinh sach)) - thanh tung va thong cong ((luong toan) OR (truong toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chinh sach)) - thanh tung va thong cong ((luong toan) OR (truong toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chinh sach)) - thanh tung va thong cong ((luong toan) OR (truong toan)) cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chinh sach)) - thanh tung va thong cong ((luong toan) OR (truong toan)) cao*.