Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quoc si ca snippets" » "duoc si ca snippets", "quoc so ca snippets", "quoc su ca snippets", "quoc si cay snippets", "quoc si da snippets", "quoc li ca 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: (((("quoc si ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quoc si ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quoc si ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quoc si ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.