Perhaps you should try some spelling variations:
"dong chen thi snippets" » "dong chan thi snippets", "dong che thi snippets", "dong chuyen thi snippets", "dong chinh thi snippets", "dong phan thi snippets", "dong can thi snippets", "dong chen thi 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: (((("dong chen thi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong chen thi snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong chen thi snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong chen thi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.