Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hat cua doan snippets" » "hat cua doanh snippets", "hat cua dan snippets", "hat cua toan snippets", "nhat cua doan snippets", "chat cua doan snippets", "phat 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: (((("hat 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: (((("hat cua doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hat cua doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat cua doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.