Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"zheng liu li snippets" » "zhifeng liu li snippets", "cheng lin li snippets", "cheng lu li snippets", "zheng lieu li snippets", "zheng li li snippets", "zheng xiu li snippets", "zheng liu li slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using java snippets") or ("zheng liu li snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("zheng liu li snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( zheng liu li snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("zheng liu li snippets"))) or ("locating bug code snippets"))*.