Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc hoc cuu snippets" » "duoc hoc cuu snippets", "luc hoc cuu snippets", "du hoc cuu snippets", "duc hoc huu snippets", "duc hoc cua snippets", "duc hoc cau 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: (((("duc hoc cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc hoc cuu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc hoc cuu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc hoc cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.