Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham nhat da snippets" » "pham nha da snippets", "pham nhat de snippets", "pham nhat ha snippets", "phan nhat da 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 nhat da 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 nhat da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham nhat da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham nhat da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.