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