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)
"coder solution lda coding program" » "code solution lda coding program" (Expand search), "copper solution lda coding program" (Expand search), "powder solution lda coding program" (Expand search), "coder solution lda cloning program" (Expand search), "coder solution lda loading program" (Expand search), "coder solution lda cooling programs" (Expand search), "coder solutions lda coding program" (Expand search), "coder solution leaf coding program" (Expand search), "coder solution dna coding program" (Expand search), "coder solution cdna 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: (("coder solution lda coding program") OR ("and optimization python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder solution lda coding program\") OR (\"and optimization python python programming\"))".
• Removing quotes may allow a broader search: (( coder solution lda coding program ) OR ( and optimization python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder solution lda coding program") OR ("and optimization python python programming"))*.