Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh hang » thanh hang, hang hang, hanh mang
hung manh » nhung manh, hung anh, tung manh
manh toan » thanh toan, anh tuan, tinh toan
hoc hieu » hoc thieu, hoc hien, doc hieu
hanh han » hanh nhan, hanh phan, hanh san
toan ban » van ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((hanh hang) OR (hanh han)) ((cua nhung) OR (va nhung)) hung manh toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - ((hanh hang) or (hanh han)) ((cua nhung) OR (va nhung)) hung manh toan ban~".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - ((hanh hang) or (hanh han)) ((cua nhung) OR (va nhung)) hung manh toan ban*.