Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"qua cu nhan snippets" » "qua ca nhan snippets", "qua cua nhan snippets", "qua su nhan snippets", "qua cu nhan 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: (((("qua cu nhan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("qua cu nhan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua cu nhan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua cu nhan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.