Perhaps you should try some spelling variations:
"cong viet code snippets" » "cong viec code snippets", "thong viet code snippets", "nang viet code snippets", "cong viet co snippets", "cong viet some snippets", "cong viet code slippers"
"dung van code snippets" » "duong van code snippets", "dung va code snippets", "dang van code snippets", "dung van de snippets", "dung van hoe snippets", "dung van cong snippets", "dung van code slippers"
"locating bug code snippets" » "locating bug code slippers", "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 van code snippets") or ("cong viet code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung van code snippets") OR ("cong viet code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung van code snippets ) or ( cong viet code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung van code snippets") or ("cong viet code snippets"))) or ("locating bug code snippets"))*.