Perhaps you should try some spelling variations:
"dung trinh luat snippets" » "dung tinh luat snippets", "dong trinh luat snippets", "cong trinh luat snippets", "dung trinh luan snippets", "dung trinh xuat snippets"
"using 3 code snippets" » "using 3d code snippets", "using a code snippets", "using _ code snippets"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using 3 code snippets") or ("dung trinh luat snippets"))) or ("locating bug code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using 3 code snippets") OR ("dung trinh luat snippets"))) OR ("locating bug code slippers")).
• Removing quotes may allow a broader search: (((( using 3 code snippets ) or ( dung trinh luat snippets ))) or ( locating bug code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("using 3 code snippets") or ("dung trinh luat snippets"))) or ("locating bug code slippers"))*.