Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap qua cua snippets" » "phap quan cua snippets", "phap quay cua snippets", "phap lua cua snippets", "phap quang cua snippets", "phap qua quan 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: (((("phap qua 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: (((("phap qua cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap qua cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap qua cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.