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