Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luat vi cua snippets" » "luat ve cua snippets", "luat va cua snippets", "luan vi cua snippets", "luat vai cua snippets", "luat di 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: (((("luat vi 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: (((("luat vi cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luat vi cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luat vi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.