Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trao co doc snippets" » "trao ho doc snippets", "trao cong doc snippets", "tranh co doc snippets", "trao co duoc snippets", "trao co hoc snippets", "trao co dot 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: (((("trao co doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trao co doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trao co doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trao co doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.