Perhaps you should try some spelling variations:
"dung thoi hoat snippets" » "dung thi hoat snippets", "dung toi hoat snippets", "dung thuoc hoat snippets", "dung thi hoa snippets", "dung thi hoan 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: (((("dung thoi hoat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung thoi hoat snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung thoi hoat snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung thoi hoat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.