Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"con cua doan snippets" » "con cua doanh snippets", "con cua dan snippets", "con cua toan snippets", "cong cua doan snippets", "co cua doan snippets", "dong cua doan 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: (((("con cua doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("con cua doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con cua doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con cua doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.