Perhaps you should try some spelling variations:
"dngu java java snippets" » "ngu java java snippets", "dngu java java slippers"
"van anh java snippets" » "van anh va snippets", "van thanh java snippets", "van minh java snippets", "tuan anh java snippets", "van anh java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("van anh java snippets") or ("dngu java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van anh java snippets") OR ("dngu java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van anh java snippets ) or ( dngu java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van anh java snippets") or ("dngu java java snippets"))) or ("locating bug code snippets"))*.