Perhaps you should try some spelling variations:
"dung ninh java snippets" » "dung vinh java snippets", "quang ninh java snippets", "dung dich java snippets", "dung trinh java snippets", "dung ninh java slippers"
"duong cao code snippets" » "duong co code snippets", "duong dao code snippets", "duong cac code snippets", "duong cao cong snippets", "duong cao de snippets", "duong cfd code snippets", "duong cao code 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: (((("dung ninh java snippets") or ("duong cao code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung ninh java snippets") OR ("duong cao code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung ninh java snippets ) or ( duong cao code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung ninh java snippets") or ("duong cao code snippets"))) or ("locating bug code snippets"))*.