Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho nhan le snippets" » "cho phan le snippets", "cho nha le snippets", "cho thanh le snippets", "cho nhat le snippets", "cho nhan ve 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: (((("cho nhan le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho nhan le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho nhan le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho nhan le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.