Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tra huu toan snippets" » "tra huu tuan snippets", "tra cuu toan snippets", "tra huy toan snippets", "tran huu toan snippets", "tra thuc 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: (((("tra huu 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: (((("tra huu toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tra huu toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra huu toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.