Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoi van hoan snippets" » "hoi van hoang snippets", "hoi van hoa snippets", "hoi van toan snippets", "hoi va hoan snippets", "hoi dan hoan snippets", "hai van hoan 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 van hoan 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 van hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi van hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi van hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.