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