Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ling luo cao snippets" » "ling luc cao snippets", "ling luong cao snippets", "ling luoc can snippets", "liang luo cao snippets", "link luo cao snippets", "long luo cao 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: (((("ling luo cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ling luo cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ling luo cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ling luo cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.