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