Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hai han lee snippets" » "hai phan lee snippets", "dai han lee snippets", "hai tan lee snippets", "hai han lew snippets", "hai shin lee 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: (((("hai han lee snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hai han lee snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai han lee snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai han lee snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.