Perhaps you should try some spelling variations:
"code code string cutting problem" » "code code string routing problem" (Expand search), "code code string covering problem" (Expand search), "code code sowing cutting problem" (Expand search), "code code during cutting problem" (Expand search), "code code stenting cutting problem" (Expand search), "code code sharing cutting problem" (Expand search), "code code strict cutting problem" (Expand search), "code code merging cutting problem" (Expand search), "code cdc string cutting problem" (Expand search)
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ 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: (("code code string cutting problem") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"code code string cutting problem\") OR (\"on python python python programming\"))*".
• Removing quotes may allow a broader search: (( code code string cutting problem ) OR ( on python python python programming ))*.