Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc cach da snippets" » "cuoc cach da snippets", "duoc cac da snippets", "truoc cach da snippets", "duoc cach dua snippets", "duoc cach de snippets", "duoc cach ta 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: (((("duoc cach da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc cach da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc cach da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc cach da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.