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