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