Perhaps you should try some spelling variations:
"coder coder java rostering problem" » "coder coder java clustering problem" (Expand search), "coder coder java routing problem" (Expand search), "coder coder java covering problem" (Expand search), "coder decoder java rostering problem" (Expand search), "code code java rostering problem" (Expand search), "decoder codec java rostering problem" (Expand search), "coder codes java rostering problem" (Expand search), "coder xcode java rostering problem" (Expand search)
"via python python python programming" » "via pythons python python programming" (Expand search), "via piton python python programming" (Expand search), "via pitons 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: (("coder coder java rostering problem") OR ("via python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder java rostering problem\") OR (\"via python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder java rostering problem ) OR ( via python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder java rostering problem") OR ("via python python python programming"))*.