Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quan den he snippets" » "quan doan he snippets", "quan he he snippets", "quan doi he snippets", "quan dien he snippets", "quan dan he snippets", "quan den ha 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: (((("quan den he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quan den he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan den he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan den he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.