Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan do dot snippets" » "doan o dot snippets", "toan do dot snippets", "doanh dao dot snippets", "doan co dot snippets", "doan da dot snippets", "doan do 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: (((("doan do dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan do dot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan do dot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan do dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.