Perhaps you should try some spelling variations:
"using computation in drop problem" » "using computational in drop problem" (Expand search), "using imputation in drop problem" (Expand search), "using compilation in drop problem" (Expand search), "using computation and drop problem" (Expand search), "using computation of drop problem" (Expand search), "using computation in shop problem" (Expand search), "using computation in up problem" (Expand search), "using computation in drip problem" (Expand search)
"using python python python programming" » "using pythons python python programming" (Expand search), "using piton python python programming" (Expand search), "using pitons python python programming" (Expand search), "usando python python python programming" (Expand search), "in python python python programming" (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: (("using computation in drop problem") OR ("using python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using computation in drop problem\") OR (\"using python python python programming\"))".
• Removing quotes may allow a broader search: (( using computation in drop problem ) OR ( using python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("using computation in drop problem") OR ("using python python python programming"))*.