Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dau moi de snippets" » "dai moi de snippets", "dau mo de snippets", "dau mot de snippets", "dau moi den snippets", "dau moi ve snippets", "dau moi ke 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: (((("dau moi 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: (((("dau moi de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dau moi de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dau moi de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.