Perhaps you should try some spelling variations:
"dung trong che snippets" » "dung trong cho snippets", "dung trong chien snippets", "dung trong cham snippets"
"dung con code snippets" » "dung cong code snippets", "dung von code snippets", "dung co code snippets", "dung cfd code snippets", "dung con co snippets", "dung con coi snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code 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 trong che snippets") or ("dung con code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung trong che snippets") OR ("dung con code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung trong che snippets ) or ( dung con code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung trong che snippets") or ("dung con code snippets"))) or ("locating bug code snippets"))*.