Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan than vo snippets" » "toan thang vo snippets", "toan thanh vo snippets", "toan phan vo snippets", "toan than va snippets", "toan than doc snippets", "toan than 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: (((("toan than vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toan than vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan than vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan than vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.