Perhaps you should try some spelling variations:
"_ computational coder execution problems" » "_ computational code execution problems" (Expand search), "_ computational codes execution problems" (Expand search), "_ computational model execution problems" (Expand search), "_ computational coder execution process" (Expand search), "_ computational coder evolution problems" (Expand search), "_ computational coder selection problems" (Expand search), "_ computational over execution problems" (Expand search)
"using peg python python programming" » "using peg pythons python programming" (Expand search), "using peg piton python programming" (Expand search), "using peg pitons python programming" (Expand search), "using pcr python python programming" (Expand search), "using p python python programming" (Expand search), "using pb 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: (("_ computational coder execution problems") OR ("using peg python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"_ computational coder execution problems\") OR (\"using peg python python programming\"))".
• Removing quotes may allow a broader search: (( _ computational coder execution problems ) OR ( using peg python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("_ computational coder execution problems") OR ("using peg python python programming"))*.