Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham lan hoa snippets" » "pham luan hoa snippets", "pham van hoa snippets", "phan lan hoa snippets", "pham lai hoa snippets", "pham lac hoa 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 lan hoa 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 lan hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham lan hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham lan hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.