Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"trieu thi java slippers" » "trieu think java slippers", "thieu thi java slippers", "trien thi java slippers", "tieu thi java slippers", "trieu thi java slippery", "trieu thi 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: (((("trieu thi 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: (((("trieu thi java slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trieu thi java slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trieu thi java slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.