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