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