Perhaps you should try some spelling variations:
"wang dong dat snippets" » "nang dong dat snippets", "lang dong dat snippets", "quang dong dat snippets", "wang dong vat snippets", "wang dung dat snippets", "wang dong ha snippets", "wang dong dat 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: (((("wang dong dat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("wang dong dat snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( wang dong dat snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("wang dong dat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.