Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi cac le snippets" » "hoi cac le snippets", "khai cac le snippets", "khoi can le snippets", "khoi cach le snippets", "khoi cac he snippets", "khoi mac le 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 cac le 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 cac le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi cac le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi cac le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.