Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan khanh cac snippets" » "dan khanh code snippets", "dang khanh cac snippets", "van khanh cac snippets", "dat khanh cac snippets", "dan hanh cac snippets", "dan thanh cac snippets", "dan phan cac snippets"
"dung java java snippets" » "dung va java 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 ("dan khanh cac snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dan khanh cac snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dan khanh cac snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dan khanh cac snippets"))) or ("locating bug core snippets"))*.