Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
cua truong » cua trung, xuan truong, cac truong
bien tinh » yen tinh, diep tinh, ban tinh
hanh tang » hanh trang, anh tang, hanh mang
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap
bi tinh » vi tinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((bien tinh) or (bi tinh)) - ((hanh tang) or (canh tranh)) cua truong cong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((bien tinh) OR (bi tinh)) - ((hanh tang) OR (canh tranh)) cua truong cong san toan cao.
• Adding a wildcard symbol may retrieve word variants: so ((bien tinh) or (bi tinh)) - ((hanh tang) or (canh tranh)) cua truong cong san toan cao*.