Perhaps you should try some spelling variations:
"nhan quoc trinh snippets" » "nhan quoc thinh snippets", "nhan qua trinh snippets", "nhan quy trinh snippets", "han quoc trinh snippets", "phan quoc trinh snippets", "nhan cuoc trinh snippets", "nhan quoc 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: (((("nhan quoc 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: (((("nhan quoc trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan quoc trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan quoc trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.