Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doanh cao cu snippets" » "doanh co cu snippets", "doanh bao cu snippets", "doanh cho cu snippets", "doanh cao chu snippets", "doanh tao cu snippets", "doanh cao su 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: (((("doanh cao cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doanh cao cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doanh cao cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doanh cao cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.