Perhaps you should try some spelling variations:
"advanced composites using clustering problem" » "advanced composites using covering problem" (Expand search), "advanced composites and clustering problem" (Expand search), "advanced composites means clustering problem" (Expand search), "advances composites using clustering problem" (Expand search)
"using codigo python python programming" » "using codigo pythons python programming" (Expand search), "using codigo piton python programming" (Expand search), "using codigo pitons python programming" (Expand search), "using indigo python python programming" (Expand search), "using coding python python programming" (Expand search), "using codium 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: (("advanced composites using clustering problem") OR ("using codigo python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced composites using clustering problem\") OR (\"using codigo python python programming\"))".
• Removing quotes may allow a broader search: (( advanced composites using clustering problem ) OR ( using codigo python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("advanced composites using clustering problem") OR ("using codigo python python programming"))*.