Perhaps you should try some spelling variations:
"dang java java snippets" » "dang va java snippets"
"dung trong tao slippers" » "dung trong tan slippers", "dung trong tho slippers", "dung trong tai slippers", "dung trong tao slippery", "dung trong tao grippers"
"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: (((("dang java java snippets") or ("dung trong tao slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang java java snippets") OR ("dung trong tao slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang java java snippets ) or ( dung trong tao slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang java java snippets") or ("dung trong tao slippers"))) or ("locating bug code snippets"))*.