Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh toan » tinh toan, thanh toan, trinh han
chuc danh » chuc nganh, thuc hanh, chuc nang
dung cong » dung trong
thang va » hang va, trang va, thanh va
thong va » thong cua, truong va, thong qua
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chuc danh) OR (chieu xanh)) - thanh ((thang va) OR (thong va)) dung cong trinh toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chuc danh) or (chieu xanh)) - thanh ((thang va) OR (thong va)) dung cong trinh toan tap~".
• Adding a wildcard symbol may retrieve word variants: theo ((chuc danh) or (chieu xanh)) - thanh ((thang va) OR (thong va)) dung cong trinh toan tap*.