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