Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bac cao he snippets" » "bao cao he snippets", "bac can he snippets", "bac cau he snippets", "bac tao he snippets", "bac cao h snippets", "bac cac he 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: (((("bac cao he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bac cao he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bac cao he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bac cao he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.