Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nghe ha can snippets" » "nghe hoa can snippets", "nghe han can snippets", "nghe va can snippets", "nghe hau can snippets", "nghe ha canh snippets", "nghe ha van 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 ha can 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 ha can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nghe ha can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nghe ha can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.