Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ham tac cua snippets" » "pham tai cua snippets", "pham tan cua snippets", "ham sach cua snippets", "ham tac quan snippets", "ham thuc 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: (((("ham tac 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: (((("ham tac cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ham tac cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ham tac cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.