Perhaps you should try some spelling variations:
"thong dung code snippets" » "thong cong code snippets", "thong thuong code snippets", "thong dung cong snippets", "thong dung co snippets", "thong dung de snippets", "thong dung code slippers"
"lich han code snippets" » "dich han code snippets", "lich can code snippets", "lich thai code snippets", "lich han che snippets", "lich han cosh snippets", "lich han 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: (((("lich han code snippets") or ("thong dung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lich han code snippets") OR ("thong dung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lich han code snippets ) or ( thong dung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lich han code snippets") or ("thong dung code snippets"))) or ("locating bug code snippets"))*.