Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc con dan slippers" » "duc cong dan slippers", "duc ton dan slippers", "duc cuong dan slippers", "duc co dan slippers", "duc con ban slippers", "duc con dan slippery", "duc con dan grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("duc con dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc con dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc con dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc con dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.