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