Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa benh da snippets" » "hoa benh da snippets", "hoa binh da snippets", "chua benh da snippets", "khoa benh dai snippets", "khoa benh va snippets", "khoa benh 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: (((("khoa benh da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoa benh da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa benh da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa benh da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.