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