Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lee sang cua snippets" » "lee liang cua snippets", "lam sang cua snippets", "luc sang cua snippets", "lee mang cua snippets", "lee song cua snippets", "lee hang 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: (((("lee sang 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: (((("lee sang cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lee sang cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lee sang cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.