Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quan den co snippets" » "quan doan co snippets", "quan he co snippets", "quan doi co snippets", "quan den coi snippets", "quan den o snippets", "quan den 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: (((("quan den co 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 co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan den co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan den co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.