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