Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"zheng vi ve snippets" » "zheng ni ve snippets", "zheng liu ve snippets", "zheng xie ve snippets", "zheng va ve snippets", "zheng gi ve snippets", "zheng ve ve 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: (((("zheng vi ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("zheng vi ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( zheng vi ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("zheng vi ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.