Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"von tu du snippets" » "van tu du snippets", "mon tu du snippets", "con tu du snippets", "von tu duy snippets", "von tu dau snippets", "von tru du snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

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