Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan hoc do snippets" » "phap hoc do snippets", "phan hoa do snippets", "phau hoc do snippets", "phan hoc doi snippets", "phan hoc co snippets", "phan hoc bo 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 hoc 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: (((("phan hoc do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan hoc do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan hoc do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.