Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nghi chat le snippets" » "nghe chat le snippets", "nghiem chat le snippets", "nghia nhat le snippets", "nghi nhat le snippets", "nghi hat le snippets", "nghi chat lien 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: (((("nghi chat 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: (((("nghi chat le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nghi chat le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nghi chat le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.