Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hap van do snippets" » "phap van do snippets", "nhap van do snippets", "tap van do snippets", "hap van dao snippets", "hap van de snippets", "hap van du 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: (((("hap van 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: (((("hap van do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hap van do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hap van do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.