Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho tre cau snippets" » "cho thue cau snippets", "khoe tre cau snippets", "cho te cau snippets", "cho tra cau snippets", "cho tre can 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: (((("cho tre cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho tre cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho tre cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho tre cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.