Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoi den cao snippets" » "hoi dien cao snippets", "hoi dan cao snippets", "moi den cao snippets", "hoi den cac snippets", "hoi den cam snippets", "hoi vien cao 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: (((("hoi den cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoi den cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi den cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi den cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.