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