Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
dan toan » van toan, dan than, manh toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chiet tach) or (hieu manh)) - hanh trung cua nhung cong ((dan toan) or (tinh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chiet tach) OR (hieu manh)) - hanh trung cua nhung cong ((dan toan) OR (tinh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chiet tach) or (hieu manh)) - hanh trung cua nhung cong ((dan toan) or (tinh toan)) cau*.