Perhaps you should try some spelling variations:
"den thanh java slippers" » "den thanh va slippers", "den trinh java slippers", "den think java slippers", "de thanh java slippers", "dinh thanh java slippers", "dong thanh java slippers", "den thanh java slippery", "den thanh java grippers"
"using java java snippets" » "using data 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: (((("den thanh java slippers") or ("using java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("den thanh java slippers") OR ("using java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den thanh java slippers ) or ( using java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den thanh java slippers") or ("using java java snippets"))) or ("locating bug code snippets"))*.