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