Perhaps you should try some spelling variations:
"dung toan thuc slippers" » "dung doanh thuc slippers", "dung thang thuc slippers", "dung thanh thuc slippers", "dung toan hoc slippers", "dung dan thuc slippers", "dung nhan thuc slippers", "dung toan thuc slippery", "dung toan thuc grippers"
"using 3d code snippets" » "using 3 code snippets", "using a code snippets", "using _ code snippets", "using cfd code snippets"
"locating 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: (((("using 3d code snippets") or ("dung toan thuc slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using 3d code snippets") OR ("dung toan thuc slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using 3d code snippets ) or ( dung toan thuc slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using 3d code snippets") or ("dung toan thuc slippers"))) or ("locating bug code snippets"))*.