Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"trinh tin can snippets" » "trinh tin code snippets", "trinh kinh can snippets", "trinh toan can snippets", "trinh tu can snippets", "trinh tinh can snippets", "trinh tin cac snippets", "trinh tiep can 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 tin 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 tin can snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trinh tin can snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trinh tin can snippets"))) or ("locating bug core snippets"))*.