Perhaps you should try some spelling variations:
"coder coder collision detection problem" » "coder coder collision selection problem" (Expand search), "coder coder collision prediction problem" (Expand search), "coder coder collision collection problem" (Expand search), "coder or collision detection problem" (Expand search), "coder dose collision detection problem" (Expand search), "coder odd collision detection problem" (Expand search), "coder decoder collision detection problem" (Expand search), "code code collision detection problem" (Expand search), "decoder codec collision detection problem" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons 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: (("coder coder collision detection problem") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder collision detection problem\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder collision detection problem ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder collision detection problem") OR ("_ python python python programming"))*.