Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"da voi sach snippets" » "da moi sach snippets", "da hoi sach snippets", "da voi sac snippets", "dao voi sach snippets", "dua voi sach snippets", "ba voi sach snippets", "da voi sach slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"da voi sach snippets\") OR (\"python using java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( da voi sach snippets ) OR ( python using java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("da voi sach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets"))*.