Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua thi doan snippets" » "qua thai doan snippets", "qua thi hoan snippets", "qua thi loan snippets", "qua tai doan snippets", "quach thi doan snippets", "quang thi doan 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 thi doan 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 thi doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua thi doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua thi doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.