Perhaps you should try some spelling variations:
"toc nguoi bana snippets" » "toc nguoi ban snippets", "toc nguoi benh snippets", "toc nguoi san snippets", "con nguoi bana snippets", "toc 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: (((("toc 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: (((("toc nguoi bana snippets") OR ("using java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc nguoi bana snippets ) or ( using java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc nguoi bana snippets") or ("using java java snippets"))) or ("locating bug code snippets"))*.