Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chi cua do8 snippets" » "chi cuc do8 snippets", "khi cua do8 snippets", "cuoi cua do8 snippets", "chi cua dong snippets", "chi cua duoc 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: (((("chi cua do8 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chi cua do8 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chi cua do8 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chi cua do8 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.