Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lua duong ve snippets" » "qua duong ve snippets", "tuan duong ve snippets", "luan luong ve snippets", "lua duong va snippets", "lua duong vien snippets", "lua duong van 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: (((("lua duong ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lua duong ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lua duong ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lua duong ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.