Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hoc chi doan snippets" » "hoc chi code snippets", "hoc chi dan snippets", "hoc thi doan snippets", "hoc chi toan snippets", "hoc chia doan snippets", "hoc cho doan snippets", "hoc chu 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: (((("hoc chi 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: (((("hoc chi doan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hoc chi doan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc chi doan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.