Perhaps you should try some spelling variations:
coronal shedding » viral shedding (Expand Search)
"Coronal shedding problem" » "Coronal scheduling problem" (Expand Search), "Coronal scheduling problems" (Expand Search)
"coronal heating problem" » "coronal teaching problem" (Expand Search), "coronal routing problem" (Expand Search), "coronal making problem" (Expand Search)
"Coronal setting problem" » "Coronal routing problem" (Expand Search), "Coronal routing problems" (Expand Search), "Coronal solving problems" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("coronal heating problem") OR ((("Coronal shedding problem") OR ("Coronal setting problem"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coronal heating problem\") OR (((\"Coronal shedding problem\") OR (\"Coronal setting problem\"))))".
• Removing quotes may allow a broader search: (( coronal heating problem ) OR ((( Coronal shedding problem ) OR ( Coronal setting problem )))).
• Adding a wildcard symbol may retrieve word variants: (("coronal heating problem") OR ((("Coronal shedding problem") OR ("Coronal setting problem"))))*.