Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao lan lon snippets" » "cao van lon snippets", "cao dang lon snippets", "cao tang lon snippets", "cao han lon snippets", "cao lai lon snippets", "cao lan lo 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 lon 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 lon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao lan lon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao lan lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.