Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"biet hat ca snippets" » "biet nhat ca snippets", "biet thoat ca snippets", "tiet nhat ca snippets", "biet hat cua snippets", "biet tat ca snippets", "biet hat va 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: (((("biet hat 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: (((("biet hat ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( biet hat ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("biet hat ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.