Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan cung ke snippets" » "phan cong ke snippets", "phan ung ke snippets", "phan xuong ke snippets", "phan cung me snippets", "phan cung te snippets", "phan vung kem 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 cung ke 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 cung ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan cung ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan cung ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.