Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao cong mot snippets" » "dao cuong mot snippets", "cao cong mot snippets", "dao dong mot snippets", "dao cong dot snippets", "dao trong mot snippets", "dao cong mong 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: (((("dao cong mot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao cong mot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao cong mot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao cong mot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.