Perhaps you should try some spelling variations:
"cong quy trinh slippers" » "cong qua trinh slippers", "cong quy dinh slippers", "cung quy trinh slippers", "cong ty trinh slippers", "cong cu trinh slippers", "cong quy trinh slippery", "cong quy trinh 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: (((("cong quy trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong quy trinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong quy trinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong quy trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.