Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua trung » cua truong, xuan trung, cua nhung
qua trinh » qua kinh
toc hieu » toc thieu, doc hieu, hoc thieu
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc hieu manh - canh tranh ((cua trung) or (qua trinh)) cong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu manh - canh tranh ((cua trung) OR (qua trinh)) cong san toan cao.
• Adding a wildcard symbol may retrieve word variants: toc hieu manh - canh tranh ((cua trung) or (qua trinh)) cong san toan cao*.