Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao toc doi snippets" » "cac toc doi snippets", "cao hoc doi snippets", "cao ngoc doi snippets", "cao toc do snippets", "cao toc dai 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 toc doi 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 toc doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao toc doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao toc doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.