Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doi tan cua snippets" » "doi tan code snippets", "doi ban cua snippets", "doi tac cua snippets", "dai tan cua snippets", "doi than cua snippets", "doi tang cua snippets", "doi toan cua snippets"
"python using java snippets" » "python using data 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 tan cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi tan cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doi tan cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi tan cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.