Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi su hoan snippets" » "doi su han snippets", "doi vu hoan snippets", "doi thu hoan snippets", "oi su hoan snippets", "don su hoan snippets", "voi su 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: (((("doi su 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: (((("doi su hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi su hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi su hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.