Perhaps you should try some spelling variations:
"dung trinh java snippets" » "dung tinh java snippets", "dong trinh java snippets", "cong trinh java 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 trinh 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 trinh java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong dan cac snippets ) or ( dung trinh java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong dan cac snippets") or ("dung trinh java snippets"))) or ("locating bug code snippets"))*.