Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoan di do snippets" » "khoan dinh do snippets", "khoan hoi do snippets", "khoan bai do snippets", "khoan di o snippets", "khoan di bo snippets", "khoan di du 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: (((("khoan di do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoan di do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoan di do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoan di do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.