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