Perhaps you should try some spelling variations:
"luong java java snippets" » "luong va java snippets"
"dung hong cac snippets" » "duong hong cac snippets", "dung huong cac snippets", "dung khong cac snippets", "dung thong cac snippets", "dung phong cac snippets", "dung cong cac snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 hong cac snippets") or ("luong java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung hong cac snippets") OR ("luong java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung hong cac snippets ) or ( luong java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung hong cac snippets") or ("luong java java snippets"))) or ("locating bug code snippets"))*.