Perhaps you should try some spelling variations:
"nen tranh java slippers" » "nen trinh java slippers", "nen tranh va slippers", "nen thanh java slippers", "nen tang java slippers", "can tranh java slippers", "nen tranh java slippery", "nen tranh 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: (((("nen tranh 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: (((("nen tranh java slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nen tranh java slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nen tranh java slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.