Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"truc su cong snippets" » "truc du cong snippets", "truc cu cong snippets", "thuc su cong snippets", "truc su cuong snippets", "truc sua cong snippets", "truc tu cong 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: (((("truc su cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("truc su cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( truc su cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("truc su cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.