Perhaps you should try some spelling variations:
"van hoan java snippets" » "van hoan va snippets", "van hoang java snippets", "van hoa java snippets", "van toan java snippets", "van hoan java slippers"
"using sat java snippets" » "using data java snippets", "using a java snippets", "using raw java snippets", "using sat va snippets", "using sat 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 hoan java snippets") or ("using sat java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van hoan java snippets") OR ("using sat java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van hoan java snippets ) or ( using sat java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van hoan java snippets") or ("using sat java snippets"))) or ("locating bug code snippets"))*.