Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac kieu do snippets" » "cach tieu do snippets", "cac yeu do snippets", "tac kiem do snippets", "cac bieu do snippets", "cac kieu o snippets", "cac kieu doan 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: (((("cac kieu do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac kieu do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac kieu do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac kieu do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.