Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan hai chu snippets" » "doanh tai chu snippets", "hoang hai chu snippets", "doan va chu snippets", "doan hai chau snippets", "doan hoi chu snippets", "doan hai chi 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 hai chu 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 hai chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan hai chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan hai chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.