Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"leon han xu snippets" » "leon yang xu snippets", "luan han xu snippets", "lon hanh xu snippets", "leon hanh xu snippets", "leon nhan xu snippets", "leon han tu snippets", "leon han xu slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("leon han xu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("leon han xu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( leon han xu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("leon han xu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.