Perhaps you should try some spelling variations:
"dung v code snippets" » "dung va code snippets", "dung vi code snippets", "dung ve code snippets", "dung v code slippers", "dung v core snippets"
"cong trinh luat snippets" » "cong trinh luan snippets", "cong trinh xuat snippets", "cong trinh luat slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bug core 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: (((("cong trinh luat snippets") or ("dung v code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong trinh luat snippets") OR ("dung v code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong trinh luat snippets ) or ( dung v code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong trinh luat snippets") or ("dung v code snippets"))) or ("locating bug code snippets"))*.