Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa fan mo snippets" » "khoa can mo snippets", "khoa luan mo snippets", "khoa than mo snippets", "khoa dan mo snippets", "khoa ran mo snippets", "khoa van mo 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 fan mo 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 fan mo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa fan mo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa fan mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.