Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xac sinh cua snippets" » "xac dinh cua snippets", "xa sinh cua snippets", "xuan sinh cua snippets", "xac manh cua snippets", "xac dinh cuu snippets", "xac sinh va 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: (((("xac sinh 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: (((("xac sinh cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xac sinh cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xac sinh cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.