Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dem toi do snippets" » "dem hoi do snippets", "diep toi do snippets", "dem toi doi snippets", "dem toi da snippets", "dem toi di 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: (((("dem toi do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dem toi do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dem toi do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dem toi do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.