Perhaps you should try some spelling variations:
"duong lam data slippers" » "dung lam data slippers", "tuong lai data slippers", "duong loi data slippers", "duong lam dat slippers", "duong a data slippers", "duong lam dau slippers", "duong lam data slippery", "duong lam data grippers"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("duong lam data slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong lam data slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong lam data slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong lam data slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.