Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lap dan chi snippets" » "lap dat chi snippets", "lap ban chi snippets", "hap dan chi snippets", "lap danh chi snippets", "lap dan thi snippets", "lap van chi 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 dan chi 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 dan chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lap dan chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lap dan chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.