Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao det cua snippets" » "cao de cua snippets", "cao ket cua snippets", "cao dieu cua snippets", "cao dat cua snippets", "cao dep 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: (((("cao det 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: (((("cao det cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao det cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao det cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.