Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua cuu hoc snippets" » "qua cua hoc snippets", "qua cu hoc snippets", "cua cuu hoc snippets", "qua cuu thuoc snippets", "qua cuu khoa 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: (((("qua cuu 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: (((("qua cuu hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua cuu hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua cuu hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.