Perhaps you should try some spelling variations:
"dung tinh java snippets" » "dang tinh java snippets", "dung ninh java snippets", "dung tin java snippets", "dung trinh java snippets", "dung think java snippets", "dung tinh va snippets"
"dong dan cac snippets" » "dong danh cac snippets", "duong dan cac snippets", "dong san cac snippets", "dong dan cach snippets", "dong dang cac snippets", "dong dan ca 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: (((("dong dan cac snippets") or ("dung tinh java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong dan cac snippets") OR ("dung tinh java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong dan cac snippets ) or ( dung tinh java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong dan cac snippets") or ("dung tinh java snippets"))) or ("locating bug code snippets"))*.