Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan ke co snippets" » "toan ke co snippets", "dan ke co snippets", "doanh ket co snippets", "doan ke o snippets", "doan de co 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 ke co 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 ke co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan ke co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan ke co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.