Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ran yan chen snippets" » "ran van chien snippets", "ran dan chan snippets", "ran han che snippets", "han yang chen 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: (((("ran yan chen snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ran yan chen snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ran yan chen snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ran yan chen snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.