Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quan than vo snippets" » "quan thanh vo snippets", "qua than vo snippets", "quang thanh vo snippets", "quan than va snippets", "quan than doc snippets", "quan than hoc 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 than vo 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 than vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan than vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan than vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.