Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh luan » khanh luan, hang luan, hanh luat
hang cong » dang cong, hang nong, bang cong
hoc hieu » hoc thieu, hoc hien, doc hieu
van hang » van khang, van hoang, van thang
san toan » manh toan, xuan toan, san doanh
van toan » van tuan, van tan, van thanh
dan toan » dan than, manh toan, xuan toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - hanh luan van hang cong ((((san toan) OR (van toan))) or (dan toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh luan van hang cong ((((san toan) OR (van toan))) OR (dan toan)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - hanh luan van hang cong ((((san toan) OR (van toan))) or (dan toan)) cau*".