Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan khai so snippets" » "dang khai so snippets", "van khai so snippets", "dang khoi so snippets", "dan hai so snippets", "dan khai mo snippets", "dan khi so 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: (((("dan khai so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan khai so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan khai so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan khai so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.