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