Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"quan doc chat snippets" » "quan doi chat snippets", "quan dac chat snippets", "quan doan chat snippets", "quan hoc chat snippets", "quan toc cham snippets", "quan hop chat 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: (((("quan doc chat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quan doc chat snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan doc chat snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan doc chat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.