Perhaps you should try some spelling variations:
"coder coder using variable cost" » "coder coder using visible cost" (Expand search), "coder coder using wearable cost" (Expand search), "coder coder using portable cost" (Expand search), "coder coder using variable costs" (Expand search), "coder coder using variable costing" (Expand search), "coder coder using variable control" (Expand search), "coder decoder using variable cost" (Expand search), "code code using variable cost" (Expand search), "decoder codec using variable cost" (Expand search), "coder coders using variable cost" (Expand search), "coder cover using variable cost" (Expand search), "coder code using variable cost" (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: (("coder coder using variable cost") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder using variable cost\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder using variable cost ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder using variable cost") OR ("on python python python programming"))*.