Perhaps you should try some spelling variations:
"based compositional data coding problem" » "base compositional data coding problem" (Expand search), "based compositions data coding problem" (Expand search), "varied compositional data coding problem" (Expand search), "based compositional data coding problems" (Expand search), "based compositional data coping problem" (Expand search), "based compositional data loading problem" (Expand search), "based compositional data cloning problem" (Expand search), "based compositional data recording problem" (Expand search), "based compositional data crossing problem" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking 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 compositional data coding problem") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"based compositional data coding problem\") OR (\"using coding python python programming\"))*".
• Removing quotes may allow a broader search: (( based compositional data coding problem ) OR ( using coding python python programming ))*.