Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao lan he snippets" » "cao van he snippets", "cao dang he snippets", "cao tang he snippets", "cao dan he snippets", "cao lan ha 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: (((("python using java snippets") or ("cao lan he snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("cao lan he snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( cao lan he snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("cao lan he snippets"))) or ("locating bug code snippets"))*.