Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa can loc snippets" » "khoa cam loc snippets", "khoa cap loc snippets", "khoi can loc snippets", "khoa van loc snippets", "khoa chon loc snippets", "khoa mang loc 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 can loc 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 can loc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa can loc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa can loc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.