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