Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pcna va do snippets" » "pcna va dao snippets", "pcna va doc snippets", "pcna va co snippets", "pca va do snippets", "ccna va do snippets", "pcda va do 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: (((("pcna va 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: (((("pcna va do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pcna va do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pcna va do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.