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