Perhaps you should try some spelling variations:
"dung heng code snippets" » "dung hong code snippets", "dung hung code snippets", "dung chung code snippets", "dung heng core snippets", "dung heng code slippers"
"dong rate code snippets" » "dong vat code snippets", "dong dat code snippets", "dong rate core snippets", "dong rate code slippers"
"locating bug code snippets" » "locating bug core snippets", "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("dung heng code snippets") or ("dong rate code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung heng code snippets") OR ("dong rate code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung heng code snippets ) or ( dong rate code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung heng code snippets") or ("dong rate code snippets"))) or ("locating bug code snippets"))*.