Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"gap du toan snippets" » "gap duc toan snippets", "gap du doan snippets", "gap dung toan snippets", "lap du toan snippets", "gap do toan snippets", "tap du toan 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: (((("gap du toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("gap du toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gap du toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gap du toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.