Perhaps you should try some spelling variations:
"nhan thuy trinh snippets" » "nhan thuy tinh snippets", "nhan thuyet trinh snippets", "nhan thuat trinh snippets", "nhan thuc trinh snippets", "thanh thuy trinh snippets", "nhanh thuc trinh snippets", "nhan thuy 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 thuy 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 thuy trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan thuy trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan thuy trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.