Perhaps you should try some spelling variations:
"dong cung code snippets" » "dong chung code snippets", "dong hung code snippets", "dong cong code snippets", "dong cung code slippers"
"dan thi java snippets" » "dan think java snippets", "dang thi java snippets", "tran thi java snippets", "dinh thi java snippets", "dan thi java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("dan thi java snippets") or ("dong cung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan thi java snippets") OR ("dong cung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan thi java snippets ) or ( dong cung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan thi java snippets") or ("dong cung code snippets"))) or ("locating bug code snippets"))*.