Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sac hanh che snippets" » "sach danh che snippets", "bac thanh che snippets", "cac thanh che snippets", "sac han che snippets", "sac hanh he snippets", "sac hanh nghe 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: (((("sac hanh che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sac hanh che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sac hanh che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sac hanh che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.