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