Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chu thi doan snippets" » "chu thai doan snippets", "chu thi hoan snippets", "chu thi loan snippets", "chuc thi doan snippets", "cau thi doan snippets", "chu thich doan 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: (((("python using java snippets") or ("chu thi doan snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("chu thi doan snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( chu thi doan snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("chu thi doan snippets"))) or ("locating bug code snippets"))*.