Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan xuan ho snippets" » "doan quan ho snippets", "doan tuan ho snippets", "doanh luan ho snippets", "doan xuan ha snippets", "doan xuan huy snippets", "doan xuan thu 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: (((("doan xuan ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan xuan ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan xuan ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan xuan ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.