Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu hong le snippets" » "thu huong le snippets", "thuy hong le snippets", "thu hoang le snippets", "thu thong le snippets", "thu phong le 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 ("thu hong le snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("thu hong le snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( thu hong le snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("thu hong le snippets"))) or ("locating bug code snippets"))*.