Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dang danh chi snippets" » "dang dinh chi snippets", "dang hanh chi snippets", "yang danh chi snippets", "dang danh cho snippets", "dang banh chi 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 java java snippets") or ("dang danh chi snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dang danh chi snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dang danh chi snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dang danh chi snippets"))) or ("locating bug code snippets"))*.