Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc ca chua snippets" » "duc ca cua snippets", "duc sua chua snippets", "duc cac chua snippets", "duc va chua snippets", "duc ha chua 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 ca chua 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 ca chua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc ca chua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc ca chua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.