Perhaps you should try some spelling variations:
"hoan doc trinh slippers" » "hoan doc tinh slippers", "hoan doi trinh slippers", "hoan hoc trinh slippers", "hoa doc trinh slippers", "khoan duoc trinh slippers", "hoan doc trinh slippery", "hoan doc 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: (((("hoan doc 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: (((("hoan doc trinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoan doc trinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoan doc trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.