Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong lich can snippets" » "cong lich code snippets", "cuong lich can snippets", "cong linh can snippets", "long lich can snippets", "cong dich can snippets", "cong lich han snippets", "cong tich can 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: (((("cong lich can snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong lich can snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong lich can snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong lich can snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.