Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luu chan can snippets" » "huu chan can snippets", "luu chat can snippets", "luu thanh can snippets", "luu chan nan snippets", "luu chan doan snippets", "luu phan cang 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: (((("python using java snippets") or ("luu chan can snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("luu chan can snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( luu chan can snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("luu chan can snippets"))) or ("locating bug code snippets"))*.