Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trinh sau so snippets" » "trinh san so snippets", "trinh cau so snippets", "trinh su so snippets", "trinh sau mo snippets", "trinh sau 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: (((("trinh sau so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh sau so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh sau so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh sau so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.