Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chi tieu hoc snippets" » "chi tiet hoc snippets", "chi hieu hoc snippets", "cai tien hoc snippets", "chi lieu hoc snippets", "chi tieu hoa 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 tieu hoc 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 tieu hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chi tieu hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chi tieu hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.