Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan wu cho snippets" » "can wu cho snippets", "fan wu cho snippets", "lin wu cho snippets", "lan cu cho snippets", "lan uu cho snippets", "lan vu cho 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: (((("lan wu cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lan wu cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan wu cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan wu cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.