Perhaps you should try some spelling variations:
"based computation using navigation problem" » "based computation using estimation problem" (Expand search), "based computational using navigation problem" (Expand search), "based competition using navigation problem" (Expand search), "based compilation using navigation problem" (Expand search), "based computations using navigation problem" (Expand search), "based computation in navigation problem" (Expand search), "based composition using navigation problem" (Expand search), "based computation using irrigation problem" (Expand search), "based computation blind navigation 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: (("based computation using navigation problem") OR ("using python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"based computation using navigation problem\") OR (\"using python python python programming\"))*".
• Removing quotes may allow a broader search: (( based computation using navigation problem ) OR ( using python python python programming ))*.