Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong nam cham snippets" » "cong nam code snippets", "dong nam cham snippets", "uong nam cham snippets", "thong nam cham snippets", "cong nang cham snippets", "cong nam chi snippets", "cong nam cao 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 nam cham 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 nam cham snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( cong nam cham snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("cong nam cham snippets"))) or ("locating bug core snippets"))*.