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