Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoan ho cua snippets" » "khoan hoi cua snippets", "khoan o cua snippets", "khoan so cua snippets", "khoan hoc cua snippets", "khoan hoa cua 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: (((("khoan ho cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoan ho cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoan ho cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoan ho cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.