Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duong ky cho snippets" » "hong ky cho snippets", "duong co cho snippets", "duong va cho snippets", "duong ke cho snippets", "duong ly cho 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: (((("duong ky cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong ky cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong ky cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong ky cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.