Perhaps you should try some spelling variations:
"duong giai cham snippets" » "luong giai cham snippets", "duong giao cham snippets", "dung giai cham snippets", "duong gian cham snippets", "duong gia cham snippets", "duong giai phap snippets"
"dung java java snippets" » "dung va java 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: (((("duong giai cham snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong giai cham snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong giai cham snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong giai cham snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.