Perhaps you should try some spelling variations:
"using nhat nheo snippets" » "using sat nheo snippets", "using nhat theo snippets", "using nhan nho snippets", "using hat cheo snippets", "using nhat nheo 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: (((("using nhat nheo snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using nhat nheo snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using nhat nheo snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using nhat nheo snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.