Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"gap do hoan snippets" » "gap dao hoan snippets", "gap do hoang snippets", "gap do hoa snippets", "gap doi hoan snippets", "cap do hoan snippets", "gap o hoan 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: (((("gap do hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("gap do hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gap do hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gap do hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.