Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lap toan can snippets" » "tap toan can snippets", "lap doanh can snippets", "phap toan can snippets", "lap toan ban snippets", "lap toan cao snippets", "lap toan cau 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: (((("lap toan can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lap toan can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lap toan can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lap toan can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.