Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luat ngan de snippets" » "cua ngan de snippets", "luat dan de snippets", "luat ngay de snippets", "luat ngan ve snippets", "luat ngang ve 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: (((("luat ngan 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: (((("luat ngan de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luat ngan de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luat ngan de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.