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