Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"day danh cuu snippets" » "day manh cuu snippets", "dai danh cuu snippets", "dao danh cuu snippets", "day dinh cuu snippets", "day danh cau snippets", "day doanh cua 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 cuu 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 cuu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( day danh cuu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("day danh cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.