Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc mat dan slippers" » "duc mau dan slippers", "duc man dan slippers", "duc manh dan slippers", "duc hat dan slippers", "duc luat dan slippers", "duc mat bang slippers", "duc mat dan slippery", "duc mat 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.

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