Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sen cong cua snippets" » "den cong cua snippets", "len cong cua snippets", "nen cong cua snippets", "sen cong cu snippets", "sen dong cua snippets", "sen huong cua 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: (((("sen cong cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sen cong cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sen cong cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sen cong cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.