Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lon nam cao snippets" » "bon nam cao snippets", "loi nam cao snippets", "lon lam cao snippets", "lon nam sao snippets", "lon nam giao 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: (((("lon nam cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lon nam cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lon nam cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lon nam cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.