Perhaps you should try some spelling variations:
"cong luong core snippets" » "cong thuong core snippets", "nang luong core snippets", "cong dong core snippets", "cong luong cong snippets", "cong luong che snippets"
"cong dung co snippets" » "cuong dung co snippets", "cong dong co snippets", "thong dung co snippets", "cong dung cho snippets", "cong dung cong snippets", "cong dung cua snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code 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 dung co snippets") or ("cong luong core snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong dung co snippets") OR ("cong luong core snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong dung co snippets ) or ( cong luong core snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong dung co snippets") or ("cong luong core snippets"))) or ("locating bug code snippets"))*.