Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chao xu cho snippets" » "chao cu cho snippets", "chao xu co snippets", "chao uu cho snippets", "cao xu cho snippets", "chat xu cho snippets", "chan xu 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: (((("chao xu 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: (((("chao xu cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chao xu cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chao xu cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.