Perhaps you should try some spelling variations:
"tuan hoang code snippets" » "quan hoang code snippets", "tran hoang code snippets", "xuan hoang code snippets", "tuan hoang de snippets", "tuan hoang cong snippets", "tuan hoang cd snippets", "tuan hoang code 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"

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: (((("tuan hoang code snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tuan hoang code snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tuan hoang code snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tuan hoang code snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.