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