Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"che hoi cau snippets" » "che hoi code snippets", "che ho cau snippets", "che noi cau snippets", "che khoa cau snippets", "che hoi chu snippets", "che hoc cau snippets", "che hoa cau 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: (((("che hoi 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: (((("che hoi cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( che hoi cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("che hoi cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.