Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quoc ky cau snippets" » "duoc ky cau snippets", "nuoc ky cau snippets", "quoc huy cau snippets", "quoc ky chau snippets", "quoc ke cau 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 ky cau 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 ky cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quoc ky cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quoc ky cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.