Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc gia cua snippets" » "duc gia cua snippets", "toc gia cua snippets", "hoc gia cua snippets", "doc gian cua snippets", "doc giau cua snippets", "doc gia cuc 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: (((("doc gia 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: (((("doc gia cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc gia cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc gia cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.