Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bac vang cua snippets" » "tac vang cua snippets", "bau vang cua snippets", "bac giang cua snippets", "bac mang cua snippets", "bac hang cua snippets", "bac tang cua 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: (((("bac vang cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bac vang cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bac vang cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bac vang cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.