Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luu anh dong snippets" » "luu anh huong snippets", "luu anh son snippets", "luu hanh dong snippets", "cuu anh dong snippets", "luu thanh dong 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 dong 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 dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luu anh dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luu anh dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.