Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bui khanh du snippets" » "bui thanh du snippets", "duy khanh du snippets", "thi khanh du snippets", "bui khach deu snippets", "bui khanh bui snippets", "bui khanh thu 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: (((("bui khanh du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bui khanh du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bui khanh du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bui khanh du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.