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