Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung quang von snippets" » "dung quang code snippets", "dang quang von snippets", "luong quang von snippets", "dung luan von snippets", "dung quang van snippets", "dung quang vuong snippets", "dung quang vinh 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 quang von snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung quang von snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung quang von snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung quang von snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.