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