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