Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua san hoc snippets" » "cua ban hoc snippets", "cua dan hoc snippets", "ca san hoc snippets", "cua van hoc snippets", "cua san ho 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: (((("cua san hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua san hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua san hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua san hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.