Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cuong de cua snippets" » "cuong den cua snippets", "cuong ve cua snippets", "cong de cua snippets", "cuong le cua snippets", "cuong te cua snippets", "cuong dieu 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 de 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 de cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuong de cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuong de cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.