Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong bao cac snippets" » "dong bac cac snippets", "dong dao cac snippets", "dong ban cac snippets", "dong bao cao snippets", "dong sao cac snippets", "dong tao cac 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: (((("dong bao cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong bao cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong bao cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong bao cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.