Perhaps you should try some spelling variations:
rca » arca, rcac, rcga
orca » oarca, orcac, orcga, dorca, orcad, arca
dorcad » doarcad, dorcacd, dorcgad, ddorcad, dorcadd, darcad, dorca, orcad
aorca » aoarca, aorcac, aorcga, adorca, aorcad, aarca, arca, aorta, dorca
oarcad » oaarcad, oarcacd, oarcgad, orcad
roca » rocca, rocha, boca

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

• Performing a fuzzy search may retrieve terms with similar spellings: modified (((((rca or roca) or ohca) or (orca or dorcad)) or aorca) or oarcad) estimation algorithm~.
• If you are trying to use Boolean operators, they must be ALL CAPS: modified (((((rca OR roca) OR ohca) OR (orca OR dorcad)) OR aorca) OR oarcad) estimation algorithm.
• Adding a wildcard symbol may retrieve word variants: modified (((((rca or roca) or ohca) or (orca or dorcad)) or aorca) or oarcad) estimation algorithm*.