Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa su can snippets" » "khoi su can snippets", "hoa su can snippets", "khoa thu can snippets", "khoa su van snippets", "khoa su cao snippets", "khoa su han 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: (((("khoa su can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoa su can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa su can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa su can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.