Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"chu thi doan snippets" » "chu thi code snippets", "chu thai doan snippets", "chu thi hoan snippets", "chu thi loan snippets", "chuc thi doan snippets", "cau thi doan snippets", "chu thich 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: (((("chu 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: (((("chu thi doan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( chu thi doan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chu thi doan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.