Perhaps you should try some spelling variations:
"thang 12 code snippets" » "thang 01 code snippets", "thang 50 code snippets", "thang 8 code snippets", "thang 12 core snippets", "thang 12 code slippers"
"dung he code snippets" » "dung cho code snippets", "dung he core snippets", "dung he 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: (((("thang 12 code snippets") or ("dung he code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thang 12 code snippets") OR ("dung he code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thang 12 code snippets ) or ( dung he code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thang 12 code snippets") or ("dung he code snippets"))) or ("locating bug code snippets"))*.