Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi co du snippets" » "khi con du snippets", "khi cu du snippets", "khi mo du snippets", "khi cho du snippets", "khi co dau snippets", "khi so du 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 co du 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 co du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi co du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi co du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.