Perhaps you should try some spelling variations:
"cung thang mon snippets" » "cang thang mon snippets", "hung thang mon snippets", "dung thang mon snippets", "cung thang long snippets", "cung thanh son snippets", "cung thanh moi 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: (((("cung thang mon snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cung thang mon snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cung thang mon snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cung thang mon snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.