Perhaps you should try some spelling variations:
"dong danh cac snippets" » "dong doanh cac snippets", "dong anh cac snippets", "cong danh cac snippets", "dong dinh cac snippets", "dong danh ca snippets", "dong hanh cac snippets"
"dong va java snippets" » "dung va java snippets", "dong ha java snippets", "luong va java snippets", "dong java java 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 va java snippets") or ("dong danh cac snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong va java snippets") OR ("dong danh cac snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong va java snippets ) or ( dong danh cac snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong va java snippets") or ("dong danh cac snippets"))) or ("locating bug code snippets"))*.