Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa xa da snippets" » "hoa xa da snippets", "khoa ma da snippets", "khoa x da snippets", "khoa xa dai snippets", "khoa va da snippets", "khoa xa la 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 xa da 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 xa da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa xa da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa xa da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.