Perhaps you should try some spelling variations:
"variance optimization python python programming" » "surface optimization python python programming" (Expand search), "engine optimization python python programming" (Expand search), "value optimization python python programming" (Expand search), "variance optimization method python programming" (Expand search), "variance optimization option python programming" (Expand search), "variance optimization methods python programming" (Expand search), "variance optimization pythons python programming" (Expand search), "variance optimization piton python programming" (Expand search), "variance optimization pitons python programming" (Expand search)
"coding convention on coding program" » "coding conventions on coding program" (Expand search), "joint convention on coding program" (Expand search), "bonding conventional on coding program" (Expand search), "coding convention on cloning program" (Expand search), "coding convention on loading program" (Expand search), "coding convention on cooling programs" (Expand search), "coding convention non coding program" (Expand search), "coding convention of coding program" (Expand search), "coding convention and coding program" (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: (("coding convention on coding program") OR ("variance optimization python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coding convention on coding program\") OR (\"variance optimization python python programming\"))".
• Removing quotes may allow a broader search: (( coding convention on coding program ) OR ( variance optimization python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coding convention on coding program") OR ("variance optimization python python programming"))*.