Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khai bao con snippets" » "hai ba con snippets", "khi bai con snippets", "khoi bay con snippets", "khai bao ton snippets", "khai tao con snippets", "khai bai con 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: (((("khai bao 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: (((("khai bao con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khai bao con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khai bao con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.