Perhaps you should try some spelling variations:
"dung quang code snippets" » "dang quang code snippets", "luong quang code snippets", "dung luan code snippets", "dung quang de snippets"
"chung cu code slippers" » "chung cfd code slippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung quang code snippets") or ("chung cu code slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung quang code snippets") OR ("chung cu code slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung quang code snippets ) or ( chung cu code slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung quang code snippets") or ("chung cu code slippers"))) or ("locating bug code snippets"))*.