Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua vong doi snippets" » "qua song doi snippets", "qua cong doi snippets", "qua dong doi snippets", "qua trong doi snippets", "qua huong doi snippets", "qua dung doi 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 vong doi 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 vong doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua vong doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua vong doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.