Perhaps you should try some spelling variations:
piero » pmiero, ppiero, pviero
ier » mier, pier, vier
mhier » mhmier, mhpier, mhvier, mier, maier, meier
thier » thmier, thpier, thvier, thiers, trier, thiel
thiery » thmiery, thpiery, thviery, thiersy, triery, thiely, thierry, thiers, thiry
phper » paper, piper, pyper

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

• Performing a fuzzy search may retrieve terms with similar spellings: sadhana ((((piero or ier) or mhier) or ((((thier or phper) or phper) or thiery) or phper)))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: sadhana ((((piero OR ier) OR mhier) OR ((((thier OR phper) OR phper) OR thiery) OR phper))).
• Adding a wildcard symbol may retrieve word variants: sadhana ((((piero or ier) or mhier) or ((((thier or phper) or phper) or thiery) or phper)))*.