Perhaps you should try some spelling variations:
"danh diep tinh snippets" » "danh dien tinh snippets", "danh viet tinh snippets", "dang dieu tinh snippets", "danh diep trinh snippets", "danh diep dinh snippets", "danh diep minh snippets", "danh diep tinh 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: (((("danh diep tinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh diep tinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh diep tinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh diep tinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.