Perhaps you should try some spelling variations:
"cong lon chieu snippets" » "cong lon code snippets", "cong doi chieu snippets", "cong ho chieu snippets", "cong led chieu snippets", "cong luong chieu snippets", "cong dong chieu snippets", "cong cong chieu snippets"
"locating bug core snippets" » "locating bug code 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 ("cong lon chieu snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("cong lon chieu snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( cong lon chieu snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("cong lon chieu snippets"))) or ("locating bug core snippets"))*.