Perhaps you should try some spelling variations:
"dong cong code snippets" » "duong cong code snippets", "dung cong code snippets", "dang cong code snippets", "dong cong cong snippets", "dong cong co snippets", "dong cong che snippets", "dong cong code slippers"
"dan tinh java snippets" » "dan trinh java snippets", "dan think java snippets", "dan tinh va snippets", "doan tinh java snippets", "dang tinh java snippets", "dan tinh java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("dan tinh java snippets") or ("dong cong code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan tinh java snippets") OR ("dong cong code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan tinh java snippets ) or ( dong cong code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan tinh java snippets") or ("dong cong code snippets"))) or ("locating bug code snippets"))*.