Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tri theo don snippets" » "trich theo don snippets", "trinh theo don snippets", "tri thuoc don snippets", "tri theo dong snippets", "tri theo doi snippets", "tri theo duong 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: (((("tri theo 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: (((("tri theo don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tri theo don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tri theo don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.