Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trao doi de snippets" » "tao doi de snippets", "trao khoi de snippets", "truan doi de snippets", "trao doi deu snippets", "trao dai de snippets", "trao moi de 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 doi de 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 doi de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trao doi de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trao doi de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.