Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"than du cua snippets" » "than duc cua snippets", "toan du cua snippets", "han du cua snippets", "than duy cua snippets", "than dau cua snippets", "than dum 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: (((("than du 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: (((("than du cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( than du cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("than du cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.