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