Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mang day hoc snippets" » "mang may hoc snippets", "mang dat hoc snippets", "mang dau hoc snippets", "mang dai hoc snippets", "mang dan 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: (((("mang day 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: (((("mang day hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mang day hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mang day hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.