Perhaps you should try some spelling variations:
"dung nhat chet snippets" » "dung nhan chet snippets", "dang nhat chet snippets", "dung nha chet snippets", "dung nhat chieu snippets", "dung chai chet snippets", "dung hat cheo snippets"
"hang java java snippets" » "hang 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: (((("dung nhat chet snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung nhat chet snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung nhat chet snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung nhat chet snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.