Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoan cam do snippets" » "khoa cam do snippets", "khoan va do snippets", "phan cam do snippets", "khoan cau do snippets", "khoan cap do snippets", "khoan nam do 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 cam 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 cam do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoan cam do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoan cam do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.