Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc chau doc snippets" » "toc cham doc snippets", "moc chau doc snippets", "ngoc chau doc snippets", "toc chat doc snippets", "toc cau do snippets", "toc phau hoc 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 chau doc 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 chau doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc chau doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc chau doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.