Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoe cong ve snippets" » "khoa cong ve snippets", "hoc cong ve snippets", "cho cong ve snippets", "khoe cuong ve snippets", "khoe cong va snippets", "khoe long ve 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: (((("khoe cong ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoe cong ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoe cong ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoe cong ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.