Perhaps you should try some spelling variations:
"tran trinh java snippets" » "trang trinh java snippets", "tra trinh java snippets", "thanh trinh java snippets"
"dong cung code snippets" » "dong chung code snippets", "dong hung code snippets", "dong cong code snippets"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

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: (((("dong cung code snippets") or ("tran trinh java snippets"))) or ("locating bug code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong cung code snippets") OR ("tran trinh java snippets"))) OR ("locating bug code slippers")).
• Removing quotes may allow a broader search: (((( dong cung code snippets ) or ( tran trinh java snippets ))) or ( locating bug code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("dong cung code snippets") or ("tran trinh java snippets"))) or ("locating bug code slippers"))*.