Perhaps you should try some spelling variations:
"nhung tri thuoc snippets" » "nhung bai thuoc snippets", "nhung bi thuoc snippets", "nhung gi thuoc snippets", "nhung tri thuc snippets", "nhung tri hoc snippets", "nhung tin thuoc snippets", "nhung tri thuoc 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: (((("nhung tri thuoc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhung tri thuoc snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhung tri thuoc snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung tri thuoc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.