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