Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"wei wang cho snippets" » "wei tang cho snippets", "lei wang cho snippets", "wei fang cho snippets", "wei sang cho snippets", "wei hang 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: (((("wei wang 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: (((("wei wang cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( wei wang cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("wei wang cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.