Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi tu cua snippets" » "doi thu cua snippets", "loi tu cua snippets", "hoi tu cua snippets", "doi hu cua snippets", "doi vu cua 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 tu cua 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 tu cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi tu cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi tu cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.