Perhaps you should try some spelling variations:
main » mai
dang » dan, dung, dong
rieng » tieng
han » phan, nhan, than
hang » phang, nhang, thang, nang, bang
phang » pphang, pnhang, pthang, pnang, pbang, phan, phong, thang
hanh » phanh, nhanh, thanh, anh, hinh
pnhan » pnphan, pnnhan, pnthan, phan, nhan

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

• Performing a fuzzy search may retrieve terms with similar spellings: emperor ((main or dang) or rieng) of (((han or (hang OR phang)) or hanh) or pnhan)~.
• If you are trying to use Boolean operators, they must be ALL CAPS: emperor ((main OR dang) OR rieng) of (((han OR (hang OR phang)) OR hanh) OR pnhan).
• The words AND, OR and NOT may confuse the search; try adding quotes: "emperor ((main or dang) or rieng) of (((han or (hang OR phang)) or hanh) or pnhan)".
• Adding a wildcard symbol may retrieve word variants: emperor ((main or dang) or rieng) of (((han or (hang OR phang)) or hanh) or pnhan)*.