Perhaps you should try some spelling variations:
"and computational using subsampling program" » "and computation using subsampling program" (Expand search), "and computations using subsampling program" (Expand search), "and computacional usinas subsampling program" (Expand search), "and computational using sampling program" (Expand search), "_ computational using subsampling program" (Expand search), "and computational and subsampling program" (Expand search)
"testing to python python programming" » "testing to pythons python programming" (Expand search), "testing to piton python programming" (Expand search), "testing to pitons python programming" (Expand search), "testing the python python programming" (Expand search), "testing _ python python programming" (Expand search), "testing tool python python programming" (Expand search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"and computational using subsampling program\") OR (\"testing to python python programming\"))~".
• Removing quotes may allow a broader search: (( and computational using subsampling program ) OR ( testing to python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and computational using subsampling program") OR ("testing to python python programming"))*.