Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan nam he snippets" » "toan nham he snippets", "toan dam he snippets", "doan nam he snippets", "toan nam ha snippets", "toan nam hien snippets", "toan nam nghe 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: (((("toan nam he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toan nam he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan nam he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan nam he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.