Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong li de snippets" » "cong ti de snippets", "hong li de snippets", "cong hai de snippets", "cong lai de snippets", "cong li du snippets", "cong gi de 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 de 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 de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong li de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong li de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.