Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham tu mon snippets" » "phan tu mon snippets", "pham thi mon snippets", "pham tai mon snippets", "pham tu hon snippets", "pham tu mo 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 tu mon 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 tu mon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham tu mon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham tu mon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.