Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"buoc van cau snippets" » "buoc ban cau snippets", "buoc vao cau snippets", "luoc van cau snippets", "buoc van dau snippets", "buoc van hau snippets", "buoc van chat 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: (((("buoc van 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: (((("buoc van cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( buoc van cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("buoc van cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.