Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham khac de snippets" » "phap khac de snippets", "pham khanh de snippets", "pham khoa de snippets", "pham khac di snippets", "pham khac do snippets", "pham hac de 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 khac de 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 khac de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham khac de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham khac de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.