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