Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong vinh cao snippets" » "cong vinh code snippets", "cong trinh cao snippets", "trong vinh cao snippets", "cong viec cao snippets", "cong tinh cao snippets", "cong dinh cao snippets", "cong binh cao 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 ("cong vinh cao snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("cong vinh cao snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( cong vinh cao snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("cong vinh cao snippets"))) or ("locating bug core snippets"))*.