Perhaps you should try some spelling variations:
"dung dung co snippets" » "duong dung co snippets", "ung dung co snippets", "dung ung co snippets", "dung dung cho snippets", "dung dung cong snippets", "dung dung cua snippets"
"trinh do do snippets" » "trinh ky do snippets", "trinh dao do snippets", "trinh so do snippets", "trinh do bo 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: (((("trinh do do snippets") or ("dung dung co snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh do do snippets") OR ("dung dung co snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh do do snippets ) or ( dung dung co snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh do do snippets") or ("dung dung co snippets"))) or ("locating bug code snippets"))*.