Perhaps you should try some spelling variations:
"trinh toan va snippets" » "tinh toan va snippets", "thanh toan va snippets", "trinh han va snippets", "trinh doan va snippets", "trinh tran van snippets", "trinh toan ban snippets", "trinh toan va slippers"
"dong java java snippets" » "dong va java snippets", "dong java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("dong java java snippets") or ("trinh toan va snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong java java snippets") OR ("trinh toan va snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong java java snippets ) or ( trinh toan va snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong java java snippets") or ("trinh toan va snippets"))) or ("locating bug code snippets"))*.