Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"doan lieu data slippers" » "doan dieu data slippers", "dan lieu data slippers", "doanh hieu data slippers", "doan lieu dao slippers", "doan bieu dat slippers", "doan lieu da slippers", "doan lieu data slippery", "doan lieu data grippers"
"dung java java snippets" » "dung va java 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: (((("doan lieu data slippers") or ("dung java java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan lieu data slippers") OR ("dung java java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( doan lieu data slippers ) or ( dung java java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan lieu data slippers") or ("dung java java snippets"))) or ("locating bugs code snippets"))*.