Perhaps you should try some spelling variations:
"cong dung co snippets" » "cuong dung co snippets", "cong dong co snippets", "cong luong co snippets", "cong dung cho snippets", "cong dung cong snippets", "cong dung cua snippets"
"hanh a code snippets" » "hanh va code snippets", "hanh ma code snippets", "xanh a code snippets", "hanh a core snippets"
"locating bug code snippets" » "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: (((("hanh a code snippets") or ("cong dung co snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hanh a code snippets") OR ("cong dung co snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hanh a code snippets ) or ( cong dung co snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh a code snippets") or ("cong dung co snippets"))) or ("locating bug code snippets"))*.