Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"day dan hoc snippets" » "day danh hoc snippets", "dao dan hoc snippets", "cay dan hoc snippets", "day van hoc snippets", "day dan toc snippets", "day dai hoc 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 dan hoc 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 dan hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( day dan hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("day dan hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.