Perhaps you should try some spelling variations:
"thi dai trinh slippers" » "thi dan trinh slippers", "thi doi trinh slippers", "thi lap trinh slippers", "thoi dai trinh slippers", "thi mai trinh slippers", "thi hai trinh slippers", "thi dai trinh slippery", "thi dai 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: (((("thi dai 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: (((("thi dai trinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi dai trinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi dai trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.