Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mat nhat moi snippets" » "mat nha moi snippets", "xuat nhat moi snippets", "moi nhat moi snippets", "mat nhat mpsi snippets", "mat 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: (((("mat 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: (((("mat nhat moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mat nhat moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mat nhat moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.