Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"trinh thi can snippets" » "trinh thi code snippets", "trinh tai can snippets", "trinh thiet can snippets", "trinh tu can snippets", "trinh thi canh snippets", "trinh thi lan snippets", "trinh thi dan snippets"
"dung java java snippets" » "dung va java 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: (((("dung java java snippets") or ("trinh thi can snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("trinh thi can snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trinh thi can snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trinh thi can snippets"))) or ("locating bug core snippets"))*.