Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lenh vi co snippets" » "benh vi co snippets", "kenh vi co snippets", "lenh va co snippets", "lenh vi con snippets", "lenh vi mo snippets", "lenh vo co 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: (((("lenh vi co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lenh vi co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lenh vi co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lenh vi co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.