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