Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lanh cao hoc snippets" » "lanh dao hoc snippets", "lang cao hoc snippets", "lanh co hoc snippets", "lanh cho hoc snippets", "lanh chat hoc 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: (((("lanh cao hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lanh cao hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lanh cao hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lanh cao hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.