Perhaps you should try some spelling variations:
"nham hoan trinh snippets" » "nham khoan trich snippets", "nham hoang thinh snippets", "nham hanh trinh snippets", "pham hoang trinh snippets", "phap hoan trinh snippets", "nham hoan 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: (((("nham hoan 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: (((("nham hoan trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nham hoan trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nham hoan trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.