Perhaps you should try some spelling variations:
"hung pham cay snippets" » "nhung pham cay snippets", "nhung phat cay snippets", "dung phan cay snippets", "hung pham xay snippets", "hung pham ca snippets", "hung pham can snippets"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "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: (((("hung pham cay snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hung pham cay snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hung pham cay snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hung pham cay snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.