Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"co tranh lee snippets" » "co thanh le snippets", "co tan lee snippets", "co tranh lam snippets", "co thanh lee snippets", "co trach lee snippets", "co trinh lee 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 lee 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 lee snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( co tranh lee snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("co tranh lee snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.