Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc kham ca snippets" » "duoc kham ca snippets", "duc pham ca snippets", "duc tham ca snippets", "duc kham da snippets", "duc kham 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 kham ca 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 kham ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc kham ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc kham ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.