Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"que sang cho snippets" » "qua sang cho snippets", "que lang cho snippets", "que quang cho snippets", "que danh cho snippets", "que dung cho snippets", "que sang tao 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: (((("que sang cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("que sang cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( que sang cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("que sang cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.