Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
chieu xanh » chieu sach, chieu sang, chieu tinh
cap truong » cac truong, lap truong, cao truong
hien hanh » dieu hanh
cong cap » cung cap, cong cau, cong cac
ban toan » bai toan, ban than, bao toan
van toan » van tuan, van tan, van thanh

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