Perhaps you should try some spelling variations:
"binh nhan co snippets" » "benh nhan co snippets", "minh nhan co snippets", "binh han co snippets", "binh nhan con snippets", "binh phan co snippets", "binh nhan mo snippets"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "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: (((("binh nhan co snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("binh nhan co snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( binh nhan co snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("binh nhan co snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.