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