Perhaps you should try some spelling variations:
"quan tinh java snippets" » "quan binh java snippets", "quang ninh java snippets", "quang binh java snippets", "quan trinh java snippets", "quan think java snippets", "quan tinh va snippets", "quan tinh java slippers"
"dung cho code snippets" » "dung cho cong snippets", "dung cfd code snippets", "dung cho con snippets", "dung cho 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: (((("quan tinh java snippets") or ("dung cho code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quan tinh java snippets") OR ("dung cho code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan tinh java snippets ) or ( dung cho code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan tinh java snippets") or ("dung cho code snippets"))) or ("locating bug code snippets"))*.