Perhaps you should try some spelling variations:
"mat xuan trinh snippets" » "mat qua trinh snippets", "mat xuan dinh snippets", "mat xuan kinh snippets", "mai xuan trinh snippets", "dao xuan trinh snippets", "mat cua trinh snippets", "mat 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: (((("mat 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: (((("mat xuan trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mat xuan trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mat xuan trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.