Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngu phan gom snippets" » "ngu phap gom snippets", "nghe phan gom snippets", "ngoc phan gom snippets", "ngu phan ngoc snippets", "ngu phan mem snippets", "ngu phan bo 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: (((("ngu phan gom snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngu phan gom snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngu phan gom snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngu phan gom snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.