Perhaps you should try some spelling variations:
duong manh » duong van
hieu manh » chieu xanh, hieu nganh, dieu hanh
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
manh toan » thanh toan, anh tuan, tinh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu manh) or (hieu lang)) - hanh tang ((cua nhung) or (cua cong)) duong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (hieu lang)) - hanh tang ((cua nhung) OR (cua cong)) duong manh toan ban.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (hieu lang)) - hanh tang ((cua nhung) or (cua cong)) duong manh toan ban*.