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