Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nghe vi son snippets" » "nghe va son snippets", "nghe noi son snippets", "nghe vu son snippets", "nghe vi con snippets", "nghe vi san 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: (((("nghe vi son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nghe vi son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nghe vi son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nghe vi son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.