Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran viet oc snippets" » "trien viet oc snippets", "gian viet oc snippets", "san viet oc snippets", "tran viet goc snippets", "tran viet o snippets", "tran viet duc 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: (((("tran viet oc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran viet oc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran viet oc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran viet oc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.