Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"von ngon doc snippets" » "von ngan doc snippets", "mon ngon doc snippets", "voi ngon doc snippets", "von ngo duc snippets", "von ngo dac 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 ngon doc 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 ngon doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( von ngon doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("von ngon doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.