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