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