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