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