Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham duc cau snippets" » "pham duc hau snippets", "pham duc mau snippets", "pham duc cac snippets", "phan duc cau 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: (((("pham duc cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham duc cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham duc cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham duc cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.