Perhaps you should try some spelling variations:
"hung tran cham snippets" » "hung tran code snippets", "huong tran cham snippets", "quang tran cham snippets", "hung thang cham snippets", "hung trang cham snippets", "hung tran chau snippets", "hung tranh chap 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 cham 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 cham snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hung tran cham snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hung tran cham snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.