Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan khai do snippets" » "dang khai do snippets", "van khai do snippets", "dang khoi do snippets", "dan thai do snippets", "dan khac do snippets", "dan khai mo 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 do 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 do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan khai do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan khai do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.