Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vat dich hoc snippets" » "van dich hoc snippets", "va dich hoc snippets", "vat lich hoc snippets", "vat sinh hoc snippets", "vat hinh hoc snippets", "vat tinh 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: (((("vat dich 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: (((("vat dich hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vat dich hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vat dich hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.