Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kai tan toan snippets" » "kai tan tran snippets", "kai tap toan snippets", "kai van toan snippets", "hai tan toan snippets", "mai tan toan snippets", "dai tan 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 tan 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 tan toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kai tan toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kai tan toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.