Perhaps you should try some spelling variations:
"pham theo code snippets" » "pham thi code snippets", "pham theo cong snippets", "pham theo code slippers"
"dung phan code snippets" » "dung nhan code snippets", "dung luan code snippets", "dung ha code snippets", "dung phan cong snippets", "dung phan co snippets", "dung phan che snippets", "dung phan 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: (((("pham theo code snippets") or ("dung phan code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham theo code snippets") OR ("dung phan code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham theo code snippets ) or ( dung phan code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham theo code snippets") or ("dung phan code snippets"))) or ("locating bug code snippets"))*.