Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tan chi cua snippets" » "tan chi code snippets", "toan chi cua snippets", "tran chi cua snippets", "tai chi cua snippets", "tan chi cuc snippets", "tan khi cua snippets", "tan cuoi 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: (((("tan chi 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: (((("tan chi cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tan chi cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan chi cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.