Perhaps you should try some spelling variations:
"den nguoi bana snippets" » "den nguoi ban snippets", "den nguoi benh snippets", "den nguoi san snippets", "dien nguoi bana snippets", "dung nguoi bana snippets", "con nguoi bana snippets", "den nguoi bana slippers"
"using java java snippets" » "using data java snippets", "using java 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: (((("den nguoi bana snippets") or ("using java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("den nguoi bana snippets") OR ("using java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den nguoi bana snippets ) or ( using java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den nguoi bana snippets") or ("using java java snippets"))) or ("locating bug code snippets"))*.