Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan kinh do snippets" » "than kinh do snippets", "nha kinh do snippets", "nhan sinh do snippets", "nhan kinh co snippets", "nhan trinh do snippets", "nhan kinh hoc 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: (((("nhan kinh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan kinh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan kinh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan kinh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.