Perhaps you should try some spelling variations:
"dang quoc tu snippets" » "dang thuoc tu snippets", "han quoc tu snippets", "dang quoc te snippets", "dang duoc tu snippets", "dang quoc su snippets", "dang quoc tu slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("dang quoc tu snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang quoc tu snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang quoc tu snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang quoc tu snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.