Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi mu do snippets" » "khoi su do snippets", "kho mu do snippets", "khoi cua do snippets", "khoi muc do snippets", "khoi mau do snippets", "khoi tu do 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: (((("khoi mu 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: (((("khoi mu do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi mu do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi mu do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.