Perhaps you should try some spelling variations:
"dat xuan trinh snippets" » "dat qua trinh snippets", "dat xuan dinh snippets", "dat xuan kinh snippets", "dao xuan trinh snippets", "dat luan trinh snippets", "dac xuan trinh snippets", "dat xuan trinh slippers"
"dung java java snippets" » "dung va java snippets", "dung java java 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: (((("dat xuan trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat xuan trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat xuan trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat xuan trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.