Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"can khach co snippets" » "van khanh co snippets", "vay khach co snippets", "cua khach co snippets", "can khac co snippets", "can khach cong snippets", "can khac do snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("can khach co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("can khach co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can khach co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can khach co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.