Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan tong do snippets" » "phan trong do snippets", "phan cong do snippets", "han tong do snippets", "phan thong do snippets", "phan tong don snippets", "phan dong do 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 tong do 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 tong do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan tong do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan tong do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.