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