Perhaps you should try some spelling variations:
"dung trinh java snippets" » "dung tinh java snippets", "dong trinh java snippets", "cong trinh java snippets", "dung trinh java slippers"
"dong can thi snippets" » "dong chan thi snippets", "dong san thi snippets", "dong ban thi snippets", "dong cau thi snippets", "dong dan thi snippets", "dong van thi snippets", "dong can thi slippers"
"locating bug code snippets" » "locating bug code slippers", "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 trinh java snippets") or ("dong can thi snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung trinh java snippets") OR ("dong can thi snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung trinh java snippets ) or ( dong can thi snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung trinh java snippets") or ("dong can thi snippets"))) or ("locating bug code snippets"))*.