Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan duc cua snippets" » "pham duc cua snippets", "phan tu cua snippets", "phan dau cua snippets", "phan doc cua snippets", "phan luc cua snippets", "phan tuc 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: (((("phan duc 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: (((("phan duc cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan duc cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan duc cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.