Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua duoc do snippets" » "qua buoc do snippets", "cua duoc do snippets", "luat duoc do snippets", "qua duoc dao snippets", "qua duoc co snippets", "qua duoc vo snippets"
"locating bug code snippets" » "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 duoc do 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 duoc do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua duoc do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua duoc do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.