Perhaps you should try some spelling variations:
"hang toan tran slippers" » "hang ton tran slippers", "dang toan tran slippers", "hoang thoan tran slippers", "hang thoan tran slippers", "hang tan tran slippers", "hang hoan tran slippers", "hang toan tran slippery", "hang toan tran 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: (((("hang toan tran slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang toan tran slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang toan tran slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang toan tran slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.