Perhaps you should try some spelling variations:
"luong cong che snippets" » "dung cong che snippets", "trong cong che snippets", "cong cong che snippets", "luong cong cho snippets", "luong cong chi snippets", "luong cong chu snippets"
"dan trinh java snippets" » "dan tinh java snippets", "van trinh java snippets", "hanh trinh java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("dan trinh java snippets") or ("luong cong che snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan trinh java snippets") OR ("luong cong che snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan trinh java snippets ) or ( luong cong che snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan trinh java snippets") or ("luong cong che snippets"))) or ("locating bug code snippets"))*.