Perhaps you should try some spelling variations:
"emperor vieng of han" » "emperor vien of han", "emperor tieng of han", "emperor vieng of phan", "emperor vieng of hanh", "emperor vieng of hang"
"emperor mieng of nphan" » "emperor mieng of npphan", "emperor mieng of nphanh", "emperor mieng of nphang", "emperor tieng of nphan", "emperor mien of nphan", "emperor mieng of phan"
"emperor rieng of nhan" » "emperor rieng of nphan", "emperor rieng of nhanh", "emperor rieng of nhang", "emperor tieng of nhan", "emperor rieng of phan"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("emperor vieng of han") or ((("emperor mieng of nphan") or ("emperor rieng of nhan"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("emperor vieng of han") OR ((("emperor mieng of nphan") OR ("emperor rieng of nhan")))).
• Removing quotes may allow a broader search: (( emperor vieng of han ) or ((( emperor mieng of nphan ) or ( emperor rieng of nhan )))).
• Adding a wildcard symbol may retrieve word variants: (("emperor vieng of han") or ((("emperor mieng of nphan") or ("emperor rieng of nhan"))))*.