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