Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc van dung slippers" » "doc van dong slippers", "doc xay dung slippers", "doc tin dung slippers", "do van dung slippers", "hoc van dung slippers", "duc van dung slippers", "doc van dung slippery", "doc van dung 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: (((("python using java snippets") or ("doc van dung slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("doc van dung slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( doc van dung slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("doc van dung slippers"))) or ("locating bug code snippets"))*.