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