Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"man qing liu snippets" » "man tinh liu snippets", "hai qing liu snippets", "man cong liu snippets", "man qiong liu snippets", "man ning liu snippets", "man qing li snippets", "man qing liu 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: (((("man qing liu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("man qing liu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( man qing liu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("man qing liu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.