Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cuong bo cua snippets" » "cuong vo cua snippets", "duong bo cua snippets", "cong bo cua snippets", "cuong bao cua snippets", "cuong co cua snippets", "cuong do 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: (((("cuong bo 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: (((("cuong bo cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuong bo cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuong bo cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.