Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"day danh mo snippets" » "day manh mo snippets", "dai danh mo snippets", "dao danh mo snippets", "day dan mo snippets", "day danh co snippets", "day danh o 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: (((("day danh mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("day danh mo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( day danh mo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("day danh mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.