Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham nam cao snippets" » "pham nhat cao snippets", "pham van cao snippets", "pham tai cao snippets", "pham nam sao snippets", "pham nam giao 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 nam cao 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 nam cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham nam cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham nam cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.