Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi anh tom snippets" » "thi hanh tom snippets", "thi thanh tom snippets", "thich anh tom snippets", "thi hanh tot snippets", "thi anh toan snippets", "thi anh tong 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: (((("thi anh tom snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi anh tom snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi anh tom snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi anh tom snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.