Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dich vu toan snippets" » "dich va toan snippets", "dich vu hoan snippets", "dich vi toan snippets", "dinh vu toan 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: (((("dich vu toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dich vu toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dich vu toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dich vu toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.