Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham phap do snippets" » "kham pha do snippets", "phap phan do snippets", "pham nhat do snippets", "pham phap dao snippets", "pham phap doc snippets", "pham phap dot 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: (((("pham phap 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: (((("pham phap do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham phap do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham phap do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.