Perhaps you should try some spelling variations:
"and optimization python python programming" » "and optimization method python programming" (Expand search), "and optimization option python programming" (Expand search), "and optimization methods python programming" (Expand search), "and optimization pythons python programming" (Expand search), "and optimization piton python programming" (Expand search), "and optimization pitons python programming" (Expand search)
"based inversion in decoding program" » "based inversion in welcoming program" (Expand search), "based inversion in deworming program" (Expand search), "based inversion in feeding program" (Expand search), "phase inversion in decoding program" (Expand search), "and inversion in decoding program" (Expand search), "based intrusion in decoding program" (Expand search), "based conversion in decoding program" (Expand search), "based inversion of decoding program" (Expand search), "based inversion _ decoding program" (Expand search), "based inversion and decoding program" (Expand search), "based inversion in decaying program" (Expand search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"based inversion in decoding program\") OR (\"and optimization python python programming\"))~".
• Removing quotes may allow a broader search: (( based inversion in decoding program ) OR ( and optimization python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("based inversion in decoding program") OR ("and optimization python python programming"))*.