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