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"
"dan dung code snippets" » "dan dung cong snippets", "dan dung co snippets", "dan dung de snippets", "van dung code snippets", "tin dung code snippets", "ap dung code snippets", "dan dung code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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 ("dan dung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong trinh java snippets") OR ("dan dung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong trinh java snippets ) or ( dan dung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong trinh java snippets") or ("dan dung code snippets"))) or ("locating bug code snippets"))*.