Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java snippets"
"tran manh cong snippets" » "tran minh cong snippets", "tran thanh cong snippets", "tran van cong snippets", "tran manh cuong snippets", "tran hanh cong snippets", "tran manh long 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 java java snippets") or ("tran manh cong snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("tran manh cong snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( tran manh cong snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("tran manh cong snippets"))) or ("locating bugs code snippets"))*.