Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"liu jing ma snippets" » "liu jin ma snippets", "liu ming ma snippets", "liu ying ma snippets", "liu jing cai snippets", "liu jing tan snippets", "liu jing ma slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("liu jing ma snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("liu jing ma snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( liu jing ma snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("liu jing ma snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.