Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nghe tan le snippets" » "nghe dan le snippets", "nghe san le snippets", "nghe han le snippets", "nghe tang le snippets", "nghe tuan le snippets", "nghe tan lee 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 tan 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 tan le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nghe tan le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nghe tan le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.