Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tich phan do snippets" » "dich phan do snippets", "tich than do snippets", "trinh phan do snippets", "tich phan bo snippets", "tich phan co snippets", "tich phan mo 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: (((("tich phan 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: (((("tich phan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tich phan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tich phan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.