Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh manh » hanh mang, lanh manh, hoang manh
tong cong » trong cong, cong cong, dung cong
manh toan » thanh toan, anh tuan, tinh toan
hoc hieu » hoc thieu, hoc hien, doc hieu
manh cua » doanh cua, ban cua
cua tong » cua cong, cua dong, cua nong
dan than » dan chan, ban than, van than

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 manh cua tong cong ((dan than) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh manh cua tong cong ((dan than) OR (manh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh manh cua tong cong ((dan than) or (manh toan)) cau*.