Perhaps you should try some spelling variations:
"doanh thi trinh snippets" » "doanh tai trinh snippets", "doanh thu trinh snippets", "doan thi trinh snippets", "doanh tho trinh snippets", "doanh thi thanh snippets", "doanh thi minh snippets", "doanh thi 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: (((("doanh thi 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: (((("doanh thi trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doanh thi trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doanh thi trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.