Perhaps you should try some spelling variations:
"luong cong tan snippets" » "dung cong tan snippets", "trong cong tan snippets", "cong cong tan snippets", "luong cong tac snippets", "luong cong san snippets", "luong cong thanh snippets", "luong cong tan slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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 cong tan snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luong cong tan snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong cong tan snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong cong tan snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.