Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"san mat cua snippets" » "gan mat cua snippets", "san bat cua snippets", "san xuat cua snippets", "san ma cua snippets", "san manh cua snippets", "san mang cua 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: (((("san mat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("san mat cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( san mat cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("san mat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.