Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi su te snippets" » "khoi su tu snippets", "khoi tu te snippets", "khoi su ve snippets", "khoa su te snippets", "hoi su te snippets", "thoi su te 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 su te 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 su te snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi su te snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi su te snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.