Perhaps you should try some spelling variations:
pathogen programming » python programming (Expand search), math programming (Expand search), agent programming (Expand search)
based programming » and programming (Expand search), based program (Expand search), cone programming (Expand search)
clones reading » close reading (Expand search), lines reading (Expand search), classes reading (Expand search)
reading based » reading and (Expand search)
tree pathogen » the pathogen (Expand search), borne pathogen (Expand search), to pathogen (Expand search)
code clones » some clones (Expand search), cane clones (Expand search), cafe clones (Expand search)
java lambda » gama lambda (Expand search), barra lambda (Expand search), heavy lambda (Expand search)
lambda tree » lambda type (Expand search), lambda probe (Expand search), lambda teses (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: (( code clones reading based programming ) OR ( java lambda tree pathogen programming ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( code clones reading based programming ) OR ( java lambda tree pathogen programming ))".
• Adding a wildcard symbol may retrieve word variants: (( code clones reading based programming ) OR ( java lambda tree pathogen programming ))*.