Perhaps you should try some spelling variations:
"tran quy trinh slippers" » "tran qua trinh slippers", "tran quy dinh slippers", "tran duy trinh slippers", "tran quoc trinh slippers", "tran thuy trinh slippers", "tran quy trinh slippery", "tran 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: (((("tran 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: (((("tran quy trinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran quy trinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran quy trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.