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