Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc duat dan slippers" » "duc luat dan slippers", "duc dai dan slippers", "duc dung dan slippers", "duc luat danh slippers", "duc thuat dan slippers", "duc duat dan slippery", "duc duat 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 duat 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 duat dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc duat dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc duat dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.