Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tranh lam du snippets" » "thanh lam du snippets", "trinh lam du snippets", "tran lam du snippets", "tranh lam dau snippets", "tranh lap du snippets", "tranh la du 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: (((("tranh lam du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tranh lam du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tranh lam du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tranh lam du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.