Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luoc dan he snippets" » "luoc danh he snippets", "luoc dai he snippets", "luoc can he snippets", "luoc dan ve snippets", "luoc dan de snippets", "luoc dan 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: (((("luoc dan he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luoc dan he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luoc dan he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luoc dan he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.