Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"than tu choi snippets" » "thanh tu choi snippets", "thang tu choi snippets", "phan tu choi snippets", "than su choi snippets", "than tu chi snippets", "than tu chon 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 choi 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 choi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( than tu choi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("than tu choi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.