Perhaps you should try some spelling variations:
"dung luong java snippets" » "dung huong java snippets", "dung uong java snippets", "hung luong java snippets", "dung luong va snippets"
"trong cac cong snippets" » "trong cua cong 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: (((("dung luong java snippets") or ("trong cac cong snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung luong java snippets") OR ("trong cac cong snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung luong java snippets ) or ( trong cac cong snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung luong java snippets") or ("trong cac cong snippets"))) or ("locating bug code snippets"))*.