Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khuc dan cua snippets" » "thuc dan cua snippets", "khuc van cua snippets", "chuc danh cua snippets", "khuc dan ca snippets", "khuc ban cua snippets", "khuc dai cua 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: (((("khuc dan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khuc dan cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khuc dan cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khuc dan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.