Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc tra chat snippets" » "toc tran chau snippets", "toc tran nhat snippets", "toc hoa chat snippets", "toc ta chat snippets", "toc thai chat snippets", "boc tran chat 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: (((("toc tra chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc tra chat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc tra chat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc tra chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.