Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"than tu cong snippets" » "thanh tu cong snippets", "thang tu cong snippets", "phan tu cong snippets", "than thu cong snippets", "than te cong snippets", "than tai cong 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: (((("than tu cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("than tu cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( than tu cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("than tu cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.