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