Perhaps you should try some spelling variations:
"trong tin java slippers" » "thong tin java slippers", "trong tan java slippers", "trong tieng java slippers", "trong trinh java slippers", "trong think java slippers", "trong tin va slippers", "trong tin java slippery", "trong tin java 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: (((("trong tin java slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong tin java slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong tin java slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong tin java slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.