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