Perhaps you should try some spelling variations:
"dong trung java snippets" » "dung trung java snippets", "dong trong java snippets", "dang trung java snippets", "dong trung va snippets", "dong trinh java snippets", "dong trung java slippers"
"using lc code snippets" » "using c code snippets", "using l code snippets", "using low code snippets", "using lbm code snippets", "using lc code 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: (((("using lc code snippets") or ("dong trung java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using lc code snippets") OR ("dong trung java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using lc code snippets ) or ( dong trung java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using lc code snippets") or ("dong trung java snippets"))) or ("locating bug code snippets"))*.