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