Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sat nhat moi snippets" » "sat nhan moi snippets", "san nhat moi snippets", "sat chat moi snippets", "sat nha moi snippets", "sat nhat mpsi snippets", "sat nhap mon 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: (((("sat nhat moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sat nhat moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sat nhat moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sat nhat moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.