Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doan thi cau snippets" » "doan thi code snippets", "dan thi cau snippets", "doanh tai cau snippets", "hoang thi cau snippets", "doan thi chau snippets", "doan thi cu snippets", "doan thi cam 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: (((("doan thi cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan thi cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doan thi cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan thi cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.