Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luong huu de snippets" » "duong huu de snippets", "luong thuc de snippets", "truong huu de snippets", "luong cuu de snippets", "luong huu du snippets", "luong huu dien 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: (((("luong huu 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: (((("luong huu de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong huu de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong huu de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.