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