Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"son tp toan snippets" » "son tap toan snippets", "son hop toan snippets", "son lap toan snippets", "song tp toan snippets", "soan tp 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: (((("son tp 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: (((("son tp toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( son tp toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("son tp toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.