Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cam chi toan snippets" » "cam khi toan snippets", "cam chi thanh snippets", "cam bai toan snippets", "nam chi toan snippets", "ca chi toan snippets", "can chi 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: (((("cam chi 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: (((("cam chi toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cam chi toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cam chi toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.