Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho dieu con snippets" » "cao dieu con snippets", "co dieu con snippets", "khoa dieu con snippets", "cho dieu can snippets", "cho diet con snippets", "cho dieu co 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 dieu con 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 dieu con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho dieu con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho dieu con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.