Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luat tin don snippets" » "luat kinh don snippets", "luat hinh don snippets", "luat hien don snippets", "luat tien dong snippets", "luat tin dung snippets", "luat tinh doi 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: (((("luat tin don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luat tin don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luat tin don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luat tin don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.