Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"day manh hon snippets" » "van manh hon snippets", "duc manh hon snippets", "ha manh hon snippets", "day manh ho snippets", "day minh hon snippets", "day manh huong 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 manh hon 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 manh hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( day manh hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("day manh hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.