Perhaps you should try some spelling variations:
rca » arca, rcac, rcga
dorca » doarca, dorcac, dorcga, dorra, dora, dorcad, darca, dorta
aorca » aoarca, aorcac, aorcga, arca, aorta, aorcad, aarca
orca » oarca, orcac, orcga, orcad, arca, orta
roca » rocca, rocha, boca
doroca » dorocca, dorocha, doboca, dorota

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 (dorca or doroca)) or aorca) or orca) estimation algorithm~.
• If you are trying to use Boolean operators, they must be ALL CAPS: modified (((((rca OR roca) OR ohca) OR (dorca OR doroca)) OR aorca) OR orca) estimation algorithm.
• Adding a wildcard symbol may retrieve word variants: modified (((((rca or roca) or ohca) or (dorca or doroca)) or aorca) or orca) estimation algorithm*.